Universal Compatibility: Designed for post-1997 Chamberlain, Liftmaster, Sears, and Craftsman garage door openers, this 820CB sensor kit ensures seamless integration with your existing system, replacing models 41A5034, G801CB-P, and 041-0136. Enhanced Safety Features: Equipped with advanced infrared technology, the 820CB sensors detect obstacles and prompt the garage door to reverse automatically, minimizing the risk of accidents and ensuring the safety of your vehicle and family. Easy Installation: This kit includes all necessary components for a hassle-free setup. Detailed instructions guide you through the installation process, allowing for quick programming and pairing without the need for professional help or additional tools. Long-Lasting Durability: The 820CB garage door safety sensors are constructed with high-quality materials to withstand daily use and provide reliable performance, ensuring your garage door operates safely for years to come. Comprehensive Package: Each kit contains a sending sensor with an amber LED, a receiving sensor with a green LED, detailed installation instructions, five wire connectors, two wing nuts, and two hex screws, backed by dedicated customer support. Color: Black Material: plastic Package Contents: 1 set of garage door sensors