We needed a way for my wife to call me when I go out into the yard as she cannot move around on her own. This product is exactly what we needed and works great. I can't do what I need to do in the garden or other parts of the house without worrying if she needs my help. A simple push of a button and the receiver plays a tune letting me know she needs me. I tested the device in the forest at 750 feet and it still works. I wish I had found this many years ago.
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