I really like this product, it worked right out of the box, but it's funny I missed something before, no sounds. I read the info, this sensor is body heat sensitive so works when I walk past it or when my cats want to come in the door which is why I bought it. Better than just reacting to the movement of a bug or a shadow. It doesn't read my movements through the glass door when I'm standing on the other side or walking past, so that's great too. Lots of high quality, non-irritating tones, I found 8 that I really liked and they are all very easy to adjust. Volume control is required, 5 settings! And I can always unplug it and plug it back in easily and the settings are saved. The sensor runs on batteries and the bell plugs into a power outlet. I just attached mine to a Home Depot garden post with zip ties. I put some tape on the top fold of the battery compartment to protect it from water a bit. I would definitely buy more if needed. Thank you for a great product at a great price.
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