I recently bought a couple ecolink open/close sensor they work fine except when I tried to put one on a slider which is all metal. I’m looking for suggestions on what device might work in a situation like this. It seems the magnet charges the metal and after that the state won’t change.
This topic is usually the most relevant when it comes to metal doors:
Yeah, that can be a problem with magnetic sensors. Commercial buildings with steel doors run into this issue all the time. Usually the magnet part ends up magnetizing some part of the metal and this confuses the sensor part. Remember those old school experiments where you could extend a magnet’s field with bits of metal? This process takes time, which is why there’s a delay to failure.
Anyway, there are a couple of things you can try.
first, make sure the sensor does still work. Sounds like you did that.
if this is a reed sensor with a magnet in only one piece, that’s the piece you have to worry about keeping away from the gate/door metal. If the post is wood, sometimes just installing with the sensor on the gate and the magnet on the post avoids the problem. But once the problem ha…