Feature: 1. APPLICATION: Suitable for Liftmaster, for Chamberlain, for Sears, for Raynor, for Craftsman garage door opener, replacement for 041-0136, G801-CBP, 2610459, 012381050345, S5-041A5034, 41A5034. 2. WITH BRACKETS: The garage door opener sensor comes with dedicated fixing brackets to ensure structural stability and ease of installation and replacement. 3. PRINCIPLE: This sensor connects the left and right ends of the garage door. When there are people or objects, the light is blocked and the door cannot be closed. 4. DUAL SENSORS: Including 2 sensors, the yellow light is the sending sensor, and the green light is the receiving sensor, with high accuracy and sensitivity. 5. ABS MATERIAL: The main body of the safety sensor is made of ABS material, which is lightweight and durable, resistant to corrosion and wear, has a long service life. Specification: Item Type: Safety Sensor Kit Product Material: Stainless Steel, ABS Operating Voltage: DC5-6V Indicator Light: Yellow light is the sending sensor, green light is the receiving sensor Application: For Liftmaster, for Chamberlain, for Sears, for Raynor, for Craftsman Garage Door Opener. Package List: 2 x Sensors2 x Brackets2 x Screws2 x Nuts5 x Accessories1 x User Manual Note: You need to replace the security sensor under the following circumstances: The garage door cannot be closed without obstacles. The sensor cannot function properly due to weather damage. The green light is on and the yellow light is not on. The sensor is damaged and needs to be replaced.