It's expensive What's the point? There never seems to have been a problem in the house. I got them because the smart things' arrival sensors are going on and off all the time just sitting in the attached garage. I installed 2 on the ground floor around the garage. I don't see any improvements in the arrival sensor garage. There is no app to just walk around with your phone and check the range. I think you need to take a sensor with you and walk and stop every 10 feet
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