Long time SS customer. Just wanted to rant about the horrible, weak adhesive on 3M Command strips affixed to the back of the entry sensors. At just 1cm square, they can (and will) eventually fall off -- even though I had mine mounted to the smooth vinyl windows that I first cleaned with isopropyl alcohol.

The other day, while our running errands, one fell off and triggered the alarm. Luckily, I have mine set to a 2 minute delay before it calls the cops. I was able to cancel the triggered alarm via text message.

I immediately acquired a roll of 3M VHB (Very High Bond tape) for about $25, and replaced the weak Command strips on all 9 entry sensors with the VHB tape. While doing this, I discovered a few other sensors just hanging by a thread. Again, they were affixed to smooth, clean vinyl window frames.

This is probably a known issue (I don't frequent this community), but nevertheless, I just wanted to rant to let others know as well as suggest a better solution. Why Simplisafe uses such weak adhesive is beyond me. I wonder how many false alarms were triggered as a result.

Window sensors on chamfered frames

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