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My old mentor told me to always mount motion detectors at 7 feet high - installed one at 8 feet last Tuesday and got a false alarm call within 2 hours

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fiona_clark
Seven feet is for human detection, eight feet catches cats and raccoons.
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burns.richard
Funny you mention that, @fiona_clark. My buddy Mike had a motion light set at seven feet and it kept tripping every night. Turned out a fat raccoon was climbing his bird feeder pole just high enough to trigger it. He moved it up to eight feet and the problem stopped.
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