Universal Gate Photocells, Pair of Infrared Photocell Sensors 12/24V AC DC, Universal Security for Automatic Gate and Garage Door, 15-25m Radius

I bought this for my garage. The original sensor for the garage door finally failed after around 25 years. That one employed a reflector at one end. I couldn’t find a similar one, so took a punt on these. I’ve just fitted them and they work perfectly. I found a supply inside the controller for the door - around 18v - ran a pair of wires to the far (reflector) side of the roller door, found a couple of 12v lamps, wired them in series, took a wire from them to the +ve supply of the receiver unit, the other wire from the lamps to the output, and a jumper across from the -ve supply to the “com” terminal. I stuck the units to the original sensor brackets with double-sided foam tape and it works like a charm. Perfect! Very pleased.Note the transmitter unit has only a pair of power connectors. The receiver has two pairs: power, “out” and “com” (common). Remember to fit the rubber ‘o’ rings.

Work great

Safety photocell for entrance gate. Hopeless instructions but easy to install with some electrical knowledge

bought one in aug 2024 failed 3 months later, bought another one in nov 2024 and failed 2 months later.messaged seller with no reply.avoid