S12aE4 - How To Install a Wireless Door Sensor on a Garage Door

I thought I’d post this one because some folks on the Internet are having troubles getting their overhead doors to signal correctly. One way I saw was very creative although just looking at it, it’s not likely to be very accurate.

So I suspect many people might think the bottom is the best place. Beyond the propensity to get wet, run over or somehow bumped into it does seem logical because that’s where the photo-eye for the door itself is. But that’s actually a safety sensor not a position sensor. True, either the magnet or sensor would be at the end of run, but the other part has to ride the rail like a hobo for a very long time.

Were I put mine it’s out of the way from mechanical damage with the slight influence of the counterbalance cable. But I could scooch that over a tad more. I do have mine operating with extreme precision and if you notice the sensor is a tad high. The purpose for that is I often run an SO cord out of the garage, and I want to manually let the door down and it still read closed.

And maybe your brand is a wee bit large or the door is a little sloppy in the roller track. You might be able to move it from beside the door to above the door. In either case you want to disconnect the door from the opener and slowly move the door by hand to make user the sender reacts, and the door can’t hit it. It might pop-off and the alarm trip.