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Title: Chamberlain wireless alarm dosen't work
Review: The Chamberlain wireless alarm -300r does not work when the motion sensor is mounted 90 ft from the base station !(it's advertised to work at 900 ft.)I believe it's underpowered---competitor's work at 3000ft. Chamberlain sent another unit, but it was no better ! I'm stuck with these worthless units, since it has been more than 30 days since I received the first one.
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