The vibrations shouldn't cause a problem. Mine vibrate but they work fine NOW. I have a 2 car garage with 2 doors. I had lots of problems with them until I realized that having both of the emitters on the left and both receivers (or whatever) on the right caused a problem. I had an old coleman camp stove and stood it on end between the two middle sensors. After that, I've never had a problem again. I suspect that putting both "senders" in the middle pointed towards the outside would fix the problem too.
The green rectangle is where I put the coleman stove.
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Steve
'08 Boxster RS60 Spyder #0099/1960
- never named a car before, but this is Charlotte.
'88 targa
SOLD 2004 - gone but not forgotten