Professional Compatibility: This garage door sensor compatible with for Genie garage door openers made after 1993 that utilize required safety ; Fit for Genie Series II garage door opener infrared safety beam sensor Safe and Reliable: The garage door sensor uses advanced infrared sensors to quickly detect obstacles during the door's descent. When an obstacle is encountered, it automatically flip over to prevent the door from accidentally injuring people or objects when closing Reliable Quality: The garage door sensor is made of high-quality materials and has undergone multiple quality tests. - and wear-, ensuring stability for long-term use Easy Installation: This garage door sensor is easy for users to install, no complicated tools or skills are required, and comes with a detailed installation manual. Before installing, make sure the power supply is not connected Package Includes: 1 pcs sending sensor, 1 pcs receiving sensor, 4 pcs lag screws. We have prepared all the accessories to install the product, you only need a screwdriver to replace the sensor Colour: Black Material: Plastic+Metal Package Contents: 1 set x garage door 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.