My wife and I signed my 81 year old mother up with the ADT service. Both the contract and the price was reasonable. When the installer showed up I took the alert button and tried it at the mailbox, in the basement, in the yard and everywhere else I could think of that was within the service area described by the company. It worked everywhere I tried it. She tests it every month but has never had to use it. She accidentally set it off one night and the calls to myself and her neighbor were very quick. I plan to keep the system for her when she gets to TV just for peace of mind when my wife and I aren't here. Hope this helps!
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