How-To Geek on MSN
5 clever uses for a presence sensor you can set up in an afternoon
Do more than just turn on your lights.
[Mellow_Labs] wanted an Everything Presence Lite but found it was always out of stock. Therefore, he decided to create his own. The kit uses a millimeter wave sensor as a super-sensitive motion ...
How-To Geek on MSN
The weirdest smart home sensor you never knew you needed
Don't sleep on these useful sensors.
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