{"id":1683,"date":"2026-08-29T21:48:49","date_gmt":"2026-08-29T16:18:49","guid":{"rendered":"https:\/\/efepvtltd.com\/blogs\/?p=1683"},"modified":"2026-08-29T21:48:53","modified_gmt":"2026-08-29T16:18:53","slug":"what-are-elevator-cop-and-lop","status":"publish","type":"post","link":"https:\/\/efepvtltd.com\/blogs\/what-are-elevator-cop-and-lop\/","title":{"rendered":"What are Elevator COP and LOP ?"},"content":{"rendered":"\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#what-are-elevator-cop-and-lop-operating-panels-wiring-and-selection-guide\">What are Elevator COP and LOP? Operating Panels, Wiring, and Selection Guide<\/a><\/li><li><a href=\"#what-are-elevator-cop-and-lop-fixtures\">What Are Elevator COP and LOP Fixtures?<\/a><\/li><li><a href=\"#why-do-elevator-cop-and-lop-fixtures-matter-in-hyderabad\">Why Do Elevator COP and LOP Fixtures Matter in Hyderabad?<\/a><\/li><li><a href=\"#how-elevator-cop-and-lop-panels-process-passenger-signals\">How Elevator COP and LOP Panels Process Passenger Signals<\/a><\/li><li><a href=\"#types-and-styles-of-elevator-cop-and-lop-panels\">Types and Styles of Elevator COP and LOP Panels<\/a><ul><li><a href=\"#standard-stainless-steel-micro-stroke-panels\">Standard Stainless Steel Micro-Stroke Panels<\/a><\/li><li><a href=\"#capacitive-touch-glass-panels\">Capacitive Touch Glass Panels<\/a><\/li><li><a href=\"#full-height-swing-cop-panels\">Full-Height Swing COP Panels<\/a><\/li><\/ul><\/li><li><a href=\"#key-benefits-of-upgrading-to-modern-cop-and-lop-fixtures\">Key Benefits of Upgrading to Modern COP and LOP Fixtures<\/a><\/li><li><a href=\"#common-mistakes-when-specifying-cop-and-lop-panels\">Common Mistakes When Specifying COP and LOP Panels<\/a><ul><li><a href=\"#what-is-the-most-common-mistake-when-specifying-elevator-cop-and-lop-panels\">What is the most common mistake when specifying elevator COP and LOP panels?<\/a><\/li><\/ul><\/li><li><a href=\"#real-world-cop-and-lop-scenarios-in-hyderabad\">Real-World COP and LOP Scenarios in Hyderabad<\/a><ul><li><a href=\"#commercial-office-modernization-in-hitech-city\">Commercial Office Modernization in Hitech City<\/a><\/li><li><a href=\"#gated-community-lift-upgrade-in-kondapur\">Gated Community Lift Upgrade in Kondapur<\/a><\/li><\/ul><\/li><li><a href=\"#frequently-asked-questions\">Frequently Asked Questions<\/a><ul><li><a href=\"#what-do-cop-and-lop-stand-for-in-an-elevator-system\">What do COP and LOP stand for in an elevator system?<\/a><\/li><li><a href=\"#what-is-the-difference-between-a-cop-and-an-lop\">What is the difference between a COP and an LOP?<\/a><\/li><li><a href=\"#what-components-are-located-inside-a-standard-elevator-cop\">What components are located inside a standard elevator COP?<\/a><\/li><li><a href=\"#are-braille-markings-mandatory-on-elevator-cop-and-lop-buttons\">Are braille markings mandatory on elevator COP and LOP buttons?<\/a><\/li><li><a href=\"#what-mounting-height-is-required-for-elevator-cop-and-lop-panels\">What mounting height is required for elevator COP and LOP panels?<\/a><\/li><li><a href=\"#what-is-a-parallel-vs-serial-cop-lop-wiring-system\">What is a parallel vs serial COP\/LOP wiring system?<\/a><\/li><li><a href=\"#can-cop-and-lop-faceplates-be-customized-for-luxury-villas\">Can COP and LOP faceplates be customized for luxury villas?<\/a><\/li><li><a href=\"#how-do-i-troubleshoot-a-sticky-or-non-responsive-elevator-call-button\">How do I troubleshoot a sticky or non-responsive elevator call button?<\/a><\/li><\/ul><\/li><li><a href=\"#optimizing-vertical-mobility-controls\">Optimizing Vertical Mobility Controls<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 id=\"what-are-elevator-cop-and-lop-operating-panels-wiring-and-selection-guide\" class=\"wp-block-heading\">What are Elevator COP and LOP? Operating Panels, Wiring, and Selection Guide<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding <strong><a href=\"https:\/\/efepvtltd.com\/\">what are elevator COP and LOP<\/a><\/strong> components requires examining the primary user interfaces that control passenger movement inside the cab and at building landings. The COP (Car Operating Panel) is the internal control board used by passengers to select floor destinations, trigger door operations, and activate alarm systems. The LOP (Landing Operating Panel) is the wall-mounted panel located on each floor landing that passengers press to summon the elevator car.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In our 15+ years of vertical transportation field engineering across Telangana, we often observe developers and facility managers treat signal fixtures as secondary aesthetic details. Whether equipping a high-rise IT park in Hitech City or a luxury villa in Jubilee Hills, selecting robust COP and LOP fixtures ensures smooth passenger registration, prevents electrical control shorts, and keeps building lifts fully compliant with local safety standards.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/efepvtltd.com\/contact-us\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/08\/732CexJaRVTzd3SdLUjcSrAcC7DPsSY2UNtJqaUu-1024x683.webp\" alt=\"What are Elevator COP and LOP \" class=\"wp-image-1655\" srcset=\"https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/08\/732CexJaRVTzd3SdLUjcSrAcC7DPsSY2UNtJqaUu-1024x683.webp 1024w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/08\/732CexJaRVTzd3SdLUjcSrAcC7DPsSY2UNtJqaUu-300x200.webp 300w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/08\/732CexJaRVTzd3SdLUjcSrAcC7DPsSY2UNtJqaUu-768x512.webp 768w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/08\/732CexJaRVTzd3SdLUjcSrAcC7DPsSY2UNtJqaUu-1536x1024.webp 1536w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/08\/732CexJaRVTzd3SdLUjcSrAcC7DPsSY2UNtJqaUu-2048x1365.webp 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<h2 id=\"what-are-elevator-cop-and-lop-fixtures\" class=\"wp-block-heading\">What Are Elevator COP and LOP Fixtures?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Elevator COP (Car Operating Panel) and LOP (Landing Operating Panel) are signal and control interface panels that translate passenger inputs into low-voltage electrical signals sent directly to the central elevator controller. The COP sits mounted inside the elevator cabin walls, while LOPs mount on hallway walls adjacent to landing entrance doors at every served floor.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502                   COP vs LOP FIXTURE COMPARISON MATRIX                 \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Feature Metric                \u2502 COP (Car Operating Panel)              \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Physical Location             \u2502 Inside the elevator cabin interior     \u2502\n\u2502 Core Functions                \u2502 Floor selection, door open\/close, alarm\u2502\n\u2502 Security Controls             \u2502 Key switches, RFID access, firefighter \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Feature Metric                \u2502 LOP (Landing Operating Panel)          \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Physical Location             \u2502 Outside on hallway landing walls       \u2502\n\u2502 Core Functions                \u2502 Directional car call (Up \/ Down)       \u2502\n\u2502 Indicator Displays             \u2502 Position display, directional arrows  \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">When we conduct technical commissioning across Hyderabad, we verify that every COP and LOP integrates seamlessly with low-voltage Serial Communication Protocol (CAN-bus or RS-485) lines. Modern panels house mechanical micro-stroke push buttons, touch screens, key switches, braille tactile plates, digital position indicators, and emergency override mechanisms behind durable stainless steel or tempered glass faceplates.<\/p>\n\n\n\n<h2 id=\"why-do-elevator-cop-and-lop-fixtures-matter-in-hyderabad\" class=\"wp-block-heading\">Why Do Elevator COP and LOP Fixtures Matter in Hyderabad?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Hyderabad\u2019s rapid real estate growth\u2014from high-traffic commercial towers in Gachibowli to multi-story gated communities in Kondapur\u2014puts heavy daily operational wear on elevator signal fixtures. High passenger traffic, humid monsoon seasons, and voltage fluctuations can cause cheap plastic buttons to stick, burn out, or fail to register calls.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502                HYDERABAD REGULATORY &amp; OPERATIONAL STANDARDS            \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Regulatory Authority          \u2502 Mandate \/ Structural Focus             \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Bureau of Indian Standards    \u2502 IS 14665 &amp; IS 17900 accessibility norms \u2502\n\u2502 National Building Code (NBC)  \u2502 Braille, button height, &amp; fire switches\u2502\n\u2502 Telangana Lifts Act           \u2502 Emergency alarm &amp; intercom wiring audits\u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Compliance rules under the <a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/www.bis.gov.in\/\">National Building Code (NBC)<\/a> and Bureau of Indian Standards guidelines require accessible button heights, braille lettering for visually impaired passengers, audible floor indicators, and dedicated key-operated firefighter panels. Failing to install certified, flame-retardant COP and LOP units can lead to inspection delays and safety compliance holds.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">According to technical specifications published by <a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/efepvtltd.com\/\">Exfol Friends Elevators<\/a>, switching from traditional hardwired push buttons to serial-bus micro-stroke COP and LOP panels reduces electrical shaft wiring complexity by up to 70% while improving signal transmission reliability across high-rise residential and commercial installations.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/efepvtltd.com\/contact-us\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/ChatGPT-Image-Feb-12-2026-11_01_36-AM-1024x683.png\" alt=\"elevator car operating panel Hyderabad\" class=\"wp-image-884\" srcset=\"https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/ChatGPT-Image-Feb-12-2026-11_01_36-AM-1024x683.png 1024w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/ChatGPT-Image-Feb-12-2026-11_01_36-AM-300x200.png 300w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/ChatGPT-Image-Feb-12-2026-11_01_36-AM-768x512.png 768w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/ChatGPT-Image-Feb-12-2026-11_01_36-AM.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<h2 id=\"how-elevator-cop-and-lop-panels-process-passenger-signals\" class=\"wp-block-heading\">How Elevator COP and LOP Panels Process Passenger Signals<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Understanding how COP and LOP panels process inputs clarifies why quality wiring and board design matter during lift installation:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502                 COP &amp; LOP SIGNAL PROCESSING FLOWCHAT                   \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 1. PASSENGER INPUT   --&gt; Micro-stroke button or capacitive touch press \u2502\n\u2502 2. SIGNAL PROCESSING --&gt; Local PCB encodes contact closure to digital  \u2502\n\u2502 3. BUS TRANSMISSION  --&gt; Serial communication (RS-485\/CAN-bus) to CPU  \u2502\n\u2502 4. DISPATCH EXEC     --&gt; Main controller assigns car and drives motor \u2502\n\u2502 5. VISUAL FEEDBACK   --&gt; PCB lights button halo &amp; updates floor LED    \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1.1. Contact Closure Activation:<\/strong>Register passenger touch or press.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A passenger presses a floor button on the COP or an arrow call button on the LOP. The mechanical switch closes a dry contact circuit operating on low DC voltage (typically 12V or 24V).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2.2. On-Board PCB Processing:<\/strong>Convert analog press to digital data.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The signal circuit board embedded behind the panel faceplate reads the contact closure. The board filters out signal bounce and converts the physical input into a digital signal packet.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3.3. Serial Data Transmission:<\/strong>Send data across traveling cable or shaft wire.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The panel routes the encoded signal packet over a shielded serial bus line (RS-485 or CAN-bus) running through the elevator traveling cable (for COP) or shaft riser wiring (for LOP).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4.4. Central Controller Processing:<\/strong>Main controller processes call dispatch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The main elevator controller CPU receives the digital packet, evaluates current car location, traveling direction, and load weight, then updates the dispatch schedule to serve the call.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>5.5. Feedback and Indicator Update:<\/strong>Provide immediate visual and audible confirmation.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The controller sends a signal back to illuminate the call button halo ring, trigger an audible chime, and update the digital floor position indicator (Dot-Matrix, Segmented, or TFT screen).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">During a field diagnostic for a commercial building in Nanakramguda, we traced intermittent floor skips to corroded signal pins inside an unshielded LOP terminal connector. Replacing the panel with an IP54-rated micro-stroke LOP using gold-plated serial connectors resolved the signal drops completely.<\/p>\n\n\n\n<h2 id=\"types-and-styles-of-elevator-cop-and-lop-panels\" class=\"wp-block-heading\">Types and Styles of Elevator COP and LOP Panels<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Developers and builders choose from diverse panel styles based on building aesthetics, expected passenger volume, and vandal resistance requirements:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502                    COP AND LOP VARIATION MATRIX                        \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Panel Style Type  \u2502 Surface Material        \u2502 Primary Ideal Application\u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Standard Stainless\u2502 Hairline \/ Mirror SS    \u2502 High-density residential \u2502\n\u2502 Steel Push Button \u2502 Grade 304 or 316        \u2502 apartments &amp; office hubs \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Capacitive Touch  \u2502 Tempered Safety Glass   \u2502 Luxury villas, boutique  \u2502\n\u2502 Glass Panels      \u2502 (Black \/ White finish)  \u2502 hotels, &amp; executive suites\u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Full-Height Swing \u2502 Hinged Stainless Steel  \u2502 High-rise commercial &amp;   \u2502\n\u2502 COP Cabinets      \u2502 Column (Full Cab Depth) \u2502 hospital stretcher lifts \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n\n\n\n<h3 id=\"standard-stainless-steel-micro-stroke-panels\" class=\"wp-block-heading\">Standard Stainless Steel Micro-Stroke Panels<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Constructed from brushed Grade 304 stainless steel, these panels feature mechanical push buttons with LED halo rings and tactile braille characters. They offer high impact resistance, making them the standard choice for residential apartment complexes in Hyderabad.<\/p>\n\n\n\n<h3 id=\"capacitive-touch-glass-panels\" class=\"wp-block-heading\">Capacitive Touch Glass Panels<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Featuring smooth tempered glass surfaces with integrated capacitive touch sensors and backlit LED icons, touch panels provide a modern aesthetic. They wipe clean easily and eliminate mechanical button wear, making them popular for high-end private villas in Jubilee Hills.<\/p>\n\n\n\n<h3 id=\"full-height-swing-cop-panels\" class=\"wp-block-heading\">Full-Height Swing COP Panels<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Full-height COPs span the entire height of the interior cabin wall on a hinged panel. This design allows service technicians to swing open the faceplate for fast access to internal wiring, key switches, inspection controls, and emergency lighting power supplies.<\/p>\n\n\n\n<h2 id=\"key-benefits-of-upgrading-to-modern-cop-and-lop-fixtures\" class=\"wp-block-heading\">Key Benefits of Upgrading to Modern COP and LOP Fixtures<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Upgrading legacy signal fixtures provides immediate aesthetic, operational, and safety advantages:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Enhanced Accessibility Compliance:<\/strong> Modern panels incorporate tactile braille characters, raised button legends, and voice synthesizers that meet NBC and BIS accessibility guidelines.<\/li>\n\n\n\n<li><strong>Reduced Shaft Wiring Complexity:<\/strong> Serial bus connectivity replaces individual copper wires per button with a simple 4-core communication loop, easing installation and troubleshooting.<\/li>\n\n\n\n<li><strong>Improved Vandal and Moisture Resistance:<\/strong> IP54-rated stainless faceplates protect internal electronics from liquid spills, aggressive cleaning agents, and heavy mechanical impacts.<\/li>\n\n\n\n<li><strong>Streamlined Building Access Control:<\/strong> Integrated RFID card readers, keypads, and key switches inside the COP restrict access to private residential penthouse floors or restricted commercial office suites.<\/li>\n\n\n\n<li><strong>Energy-Efficient LED Displays:<\/strong> Modern TFT liquid crystal displays and LED indicator screens consume minimal power while providing crisp floor numbers and directional arrows.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"common-mistakes-when-specifying-cop-and-lop-panels\" class=\"wp-block-heading\">Common Mistakes When Specifying COP and LOP Panels<\/h2>\n\n\n\n<h3 id=\"what-is-the-most-common-mistake-when-specifying-elevator-cop-and-lop-panels\" class=\"wp-block-heading\">What is the most common mistake when specifying elevator COP and LOP panels?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The most critical mistake is selecting unshielded, non-standard signal panels that lack local spare part support or fail to meet NBC accessibility height requirements. Installing panels with non-standard mounting cutouts makes future button replacements difficult, while placing call buttons too high violates building codes for wheelchair accessibility.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502                   FIXTURE SPECIFICATION OVERSIGHTS                     \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Specification Oversight       \u2502 Operational Consequence                \u2502\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u253c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\n\u2502 Non-standard cutout sizes     \u2502 Expensive custom fabrication later     \u2502\n\u2502 Omitting braille legends      \u2502 Code violations during building audit  \u2502\n\u2502 Using thin plastic faceplates \u2502 Cracking &amp; premature button stickiness \u2502\n\u2502 Non-shielded signal wiring    \u2502 Electromagnetic signal noise drops     \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ignoring Fire Service Key Switch Provisions:<\/strong> Omitting mandatory phase-I and phase-II firefighter key switches inside the main landing LOP and cabin COP violates municipal fire safety regulations.<\/li>\n\n\n\n<li><strong>Neglecting Emergency Lighting Integration:<\/strong> Failing to wire the COP&#8217;s emergency light and alarm push button directly to an independent 12V battery backup circuit leaves passengers in the dark during power cuts.<\/li>\n\n\n\n<li><strong>Using Non-Grade Stainless Steel:<\/strong> Selecting low-grade steel faceplates causes surface rusting and discoloration over time in humid environments like basement parking levels across Hyderabad.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"real-world-cop-and-lop-scenarios-in-hyderabad\" class=\"wp-block-heading\">Real-World COP and LOP Scenarios in Hyderabad<\/h2>\n\n\n\n<h3 id=\"commercial-office-modernization-in-hitech-city\" class=\"wp-block-heading\">Commercial Office Modernization in Hitech City<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A 10-story IT park in Hitech City suffered from frequent floor selection failures caused by worn-out, mechanical push-button COP panels installed 14 years ago. The original manufacturer no longer produced replacement button modules.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We guided the facility management team through retrofitting modern hairline stainless steel COP and LOP panels equipped with CAN-bus interface boards and vandal-resistant micro-stroke buttons. The retrofit restored call registration accuracy, integrated corporate RFID access card readers, and updated hallway displays to full-color TFT screens.<\/p>\n\n\n\n<h3 id=\"gated-community-lift-upgrade-in-kondapur\" class=\"wp-block-heading\">Gated Community Lift Upgrade in Kondapur<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A multi-block residential community in Kondapur needed to upgrade four aging passenger lifts to pass municipal safety audits and improve accessibility for senior residents. The existing LOP panels lacked braille legends and featured dim segment displays that were hard to see in brightly lit lobbies.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By installing NBC-compliant LOP and COP panels with high-contrast LED halo buttons, raised braille characters, and voice announcement synthesizers, the society brought the lifts into full safety compliance while making daily operation easier for residents.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/efepvtltd.com\/contact-us\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/Southeast-Elevator-Service-Maintenance-1-scaled-1-1024x768.webp\" alt=\"hall operating panel lift Telangana\" class=\"wp-image-825\" srcset=\"https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/Southeast-Elevator-Service-Maintenance-1-scaled-1-1024x768.webp 1024w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/Southeast-Elevator-Service-Maintenance-1-scaled-1-300x225.webp 300w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/Southeast-Elevator-Service-Maintenance-1-scaled-1-768x576.webp 768w, https:\/\/efepvtltd.com\/blogs\/wp-content\/uploads\/2026\/02\/Southeast-Elevator-Service-Maintenance-1-scaled-1.webp 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<h2 id=\"frequently-asked-questions\" class=\"wp-block-heading\">Frequently Asked Questions<\/h2>\n\n\n\n<h3 id=\"what-do-cop-and-lop-stand-for-in-an-elevator-system\" class=\"wp-block-heading\">What do COP and LOP stand for in an elevator system?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">COP stands for Car Operating Panel (located inside the elevator cab), and LOP stands for Landing Operating Panel (located on hallway walls at each floor landing).<\/p>\n\n\n\n<h3 id=\"what-is-the-difference-between-a-cop-and-an-lop\" class=\"wp-block-heading\">What is the difference between a COP and an LOP?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Passengers inside the elevator cab use the COP to select their destination floor and operate cab controls. Passengers waiting on building hallways use the LOP to press up or down call buttons to request an elevator.<\/p>\n\n\n\n<h3 id=\"what-components-are-located-inside-a-standard-elevator-cop\" class=\"wp-block-heading\">What components are located inside a standard elevator COP?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A standard COP contains floor selection buttons, door open\/close buttons, an emergency alarm button, a two-way intercom speaker, emergency lighting, an LED floor position indicator, and optional key switches or RFID access readers.<\/p>\n\n\n\n<h3 id=\"are-braille-markings-mandatory-on-elevator-cop-and-lop-buttons\" class=\"wp-block-heading\">Are braille markings mandatory on elevator COP and LOP buttons?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. National Building Code (NBC) accessibility standards and BIS guidelines mandate tactile braille legends alongside raised numbers on COP floor buttons and LOP call panels to assist visually impaired passengers.<\/p>\n\n\n\n<h3 id=\"what-mounting-height-is-required-for-elevator-cop-and-lop-panels\" class=\"wp-block-heading\">What mounting height is required for elevator COP and LOP panels?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To ensure wheelchair accessibility, modern building codes mandate that the highest operational button on a COP or LOP should generally not exceed 1,200 mm from the finished floor level.<\/p>\n\n\n\n<h3 id=\"what-is-a-parallel-vs-serial-cop-lop-wiring-system\" class=\"wp-block-heading\">What is a parallel vs serial COP\/LOP wiring system?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Parallel wiring routes individual copper wires from every button directly to the controller, increasing cable bulk. Serial wiring uses an integrated PCB to convert inputs into digital data packets sent over a thin 4-core communication bus line.<\/p>\n\n\n\n<h3 id=\"can-cop-and-lop-faceplates-be-customized-for-luxury-villas\" class=\"wp-block-heading\">Can COP and LOP faceplates be customized for luxury villas?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Yes. Homeowners and interior designers can select custom finishes, including champagne gold stainless steel, black mirror surfaces, or capacitive touch tempered glass panels with custom LED lighting.<\/p>\n\n\n\n<h3 id=\"how-do-i-troubleshoot-a-sticky-or-non-responsive-elevator-call-button\" class=\"wp-block-heading\">How do I troubleshoot a sticky or non-responsive elevator call button?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A non-responsive button usually stems from a worn mechanical micro-switch, accumulated dust binding the button spring, or a loose signal wire connector on the rear PCB interface.<\/p>\n\n\n\n<h2 id=\"optimizing-vertical-mobility-controls\" class=\"wp-block-heading\">Optimizing Vertical Mobility Controls<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/efepvtltd.com\/\">Understanding what elevator COP and LOP<\/a> components do helps property owners, developers, and facility managers select reliable control interfaces for their buildings. Upgrading signal panels to modern, NBC-compliant micro-stroke or touch panels enhances passenger safety, simplifies shaft wiring, and improves overall building aesthetics.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Building owners, developers, and facility managers across Hyderabad\u2014from Hitech City to Kondapur\u2014benefit from specifying robust control fixtures designed for high daily usage. Partnering with certified vertical transportation specialists like <a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/efepvtltd.com\/\">Exfol Friends Elevators<\/a> ensures your lift signals, wiring, and operating panels remain reliable and fully compliant with state safety standards.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What are Elevator COP and LOP? Operating Panels, Wiring, and Selection Guide Understanding what are elevator COP and LOP components requires examining the primary user interfaces that control passenger movement inside the cab and at building landings. The COP (Car Operating Panel) is the internal control board used by passengers to select floor destinations, trigger &#8230; <a title=\"What are Elevator COP and LOP ?\" class=\"read-more\" href=\"https:\/\/efepvtltd.com\/blogs\/what-are-elevator-cop-and-lop\/\" aria-label=\"Read more about What are Elevator COP and LOP ?\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":825,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1683","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hot-topics"],"_links":{"self":[{"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/posts\/1683","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/comments?post=1683"}],"version-history":[{"count":1,"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/posts\/1683\/revisions"}],"predecessor-version":[{"id":1684,"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/posts\/1683\/revisions\/1684"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/media\/825"}],"wp:attachment":[{"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/media?parent=1683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/categories?post=1683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/efepvtltd.com\/blogs\/wp-json\/wp\/v2\/tags?post=1683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}