How to Wire a Sensor for a Genie Garage Door | Hunker Garage door openers include a photo-electric sensor system to help prevent damage to the door or opener. The sensor emits an infrared beam that when broken, causes the opener to stop closing the door and reverses the movement back to the open position. Wiring a sensor for a Genie garage door opener is much like any other opener. Amazon: genie garage door wire Genie Garage Door Openers 24222A Wire Clip Screw Drive. 5.0 out of 5 stars 5. $9 $ 9. 80. FREE Shipping. Genie Garage Door Openers 36450B Safety Sensor Transmitter with wire and connector. 3.6 out of 5 stars 12. $25 $ 25. 75. FREE Shipping. Only 8 left in stock - order soon.