I recently starting using this external sensor for my GarageDoor2 with my primary contact on GarageDoor1. Previously I had 2 contact sensors both using external (because I had previously mounted reed switches). I mounted the WADWAZ-1 next to the door and it seems to be working great with the internal sensor on door 1. Forr the external sensor on door 2 however, the external sensor sometimes (20%???) misses a close (door shows open even though it is truly closed). I seems to correct itself on the next open/close cycle.
Anyone else use both sensors in one WADWAZ-1 and see this type of problem?