Wiring two motion sensors in parallel?

Old 05-30-14, 12:24 PM
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Wiring two motion sensors in parallel?

Can two motion sensors be wired in parallel?
I want to mount a motion sensor on each side of a garage to activate the same set of floods.
Yes, I know these use solid-state switches and not hard switches.
I just want to be sure current will not back-flow from one to the other.
I don't like fires.
Old 05-30-14, 12:27 PM
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I've seen it done before with standard 3-wire motion heads.. Whether or not it was sanctioned by the manufacturer I don't know. However I can tell you there ARE motion detectors out there with a 'slave' wire - sort of like the interconnect wire on AC smoke detectors.. So when one detects motion, any interconnected fixture turns on.
Old 05-30-14, 04:32 PM
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Your plan should work as long as the heads have three wires (normally black, white, and red for the switch leg) and they are the same circuit.

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