Compatibility and Application: This infrared photocell kit is designed to work seamlessly with a wide range of automatic door openers including for NICE ,CAME,, , and more. It is also suitable for security alarms systems that require access control, ensuring compatibility with controllers that support clean contact signals. Safety Functionality: Equipped with advanced infrared technology, the photocells provide a crucial safety feature by automatically stopping or reversing the door motor when an object is detected during closure. This function helps prevent accidents and ensures the safety of users and vehicles. Flexible Installation: The kit includes a 135 adjustable swivel electronic board to compensate for any installation errors. For optimal performance, the photocells should be installed at a minimum height of 20 cm above the ground, with a minimum distance of 2 meters between the transmitter and receiver. Comprehensive Package Contents: Each package contains a pair of photocells (one transmitter and one receiver), screws for secure wall mounting, and a multilingual instruction manual, providing all necessary components for a straightforward installation process. Installation Note: It is important to note that this photocell kit is not a suitable replacement for systems such as BlueBUS or other photoelectric barriers that only accommodate 2 cable clamps. This kit requires a 4-cable connection for the receiver part. Color: Black Material: plastic Package Contents: 1 Pair Automated Gate Safe Infrared Detector Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.