Works great in the wife's restaurant. We had doorbells so when a customer comes in we hear them from behind. she has a few mean ones who like to open and close the door without the bell ringing. then sit down and smile until she sees them sit down. Now when they open the door they will hear "DING DON WELCOME!" and they will be broken. The base is running on the same batteries as the kit so far and has been for 2 weeks. She holds it about 60-75 feet from the door in the other room and picks up the signal perfectly.
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