Title: works for about 6 months. Then it eats up new 9 volt batteries in a month.
Product review: I bought 4 of these and all lost battery power within 6 month of installing. No big deal, just replace with new batteries I though. I bought duracell, energizer, and even ever ready brands. All battery brands loose power after a month and the unit starts the low battery beep. This can't be a battery problem. Move on to another model. Though cheap, the unit will end up being a liability.
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