{"product_id":"chamberlain-820cb-replacement-garage-door-safety-sensor-2-pack","title":"CHAMBERLAIN 820CB Replacement Garage Door Safety Sensor (2-Pack)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe CHAMBERLAIN 820CB Replacement Garage Door Safety Sensor is a compact, high-precision pair designed to keep your garage door operation predictable and safe. The system projects an invisible beam across the door opening, and if the beam is interrupted, the opener can automatically reverse to prevent collisions and damage. This behavior aligns with the needs of busy homes and workshops where moving vehicles, tools, and people share the space.\u003c\/p\u003e\n\u003ch3\u003eKey benefits at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal compatibility with Chamberlain openers manufactured after 1997\u003c\/li\u003e\n\u003cli\u003eEnhanced troubleshooting and intuitive safety reversing sensing\u003c\/li\u003e\n\u003cli\u003eLow profile design minimizes the chance of misalignment or accidental disruption\u003c\/li\u003e\n\u003cli\u003eAutomatic reversal when an obstruction is detected to avoid direct contact with objects\u003c\/li\u003e\n\u003cli\u003eWorks with Chamberlain, LiftMaster and most Craftsman garage door openers\u003c\/li\u003e\n\u003cli\u003eIncludes 2 sensors, mounting brackets, 18 inches extension wire, and an instruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal world use and setup\u003c\/h3\u003e\n\u003cp\u003eIn everyday garages, the sensors sit at a height where misalignment from bumping the door or bumped objects is less likely. The included mounting brackets help you find a secure spot that stays in line as the door travels. The 18 inch extension wire offers flexibility when adapting to older openings or nonstandard wiring paths.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePair the sensors with an existing opener after 1997 for an immediate safety upgrade\u003c\/li\u003e\n\u003cli\u003eMaintain a clean, unobtrusive profile that reduces the chance of accidental bumps\u003c\/li\u003e\n\u003cli\u003eRely on a straightforward installation process guided by the included manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote that while these sensors are designed to work with a wide range of openers, performance can vary with door type and model. Consider testing the system after installation and observing door behavior to confirm proper operation.\u003c\/p\u003e\n\u003ch3\u003eInstallation tips and care\u003c\/h3\u003e\n\u003cp\u003ePlace the sensors within the recommended zone of the door opening, keeping the beam path clear of dust and obstructions. Use the included mounting brackets to secure a stable position, and route the 18 inch wire neatly to avoid snags.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHandle with care during mounting to avoid misalignment\u003c\/li\u003e\n\u003cli\u003eTest the safety reversal a few inches above floor level\u003c\/li\u003e\n\u003cli\u003eInspect wiring for wear and reassert alignment after extended use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese considerations help maintain reliable sensor performance over time without implying guarantees. The sensors are designed for broad compatibility and practical everyday use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What comes in the CHAMBERLAIN 820CB 2-Pack?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Two sensors, mounting brackets, 18-inch extension wire, and an instruction manual.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these sensors compatible with openers manufactured after 1997?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, they work with Chamberlain openers after 1997 and are compatible with LiftMaster and most Craftsman models.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CHAMBERLAIN","offers":[{"title":"Default Title","offer_id":47464170684590,"sku":"B09GB6JHRR","price":71.34,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/6012\/9710\/files\/chamberlain-820cb-safety-sensor-front-view.jpg?v=1770295160","url":"https:\/\/handyskook.ca\/products\/chamberlain-820cb-replacement-garage-door-safety-sensor-2-pack","provider":"HandySkook","version":"1.0","type":"link"}