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Lighting movement sensors

Started by allegrif, November 24, 2015, 06:26:18 PM

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This is probably a thing already, but how about having a lighting system hooked up to motion detectors? I can't imagine a motion detector would use much electricity at all, so perhaps there could be a system whereby if a motion detector doesn't detect movement in a room for a minute or so it automatically turns the lights in that room off? This could perhaps be configured to allow a manual override in certain rooms or at certain times.

I think something like this would help me greatly, my memory lets me down too often with turning the lights off!


I have noticed this become more prevelant in recent years, especially in the hallways of apartment blocks built post-2005. I don't see it much in private residences. I imagine the system can be somewhat of a hassle to setup, which is why it's only really common in new buildings, with older systems not getting converted.

I wonder how much it saves when the new lighting systems themselves are already quite efficient, this would have been much more useful with incandecent lighting systems.


We used to have them in our school. What I'd really like to know is just how much energy the sensors and related equipment use. I know it can't be that much, but it does make you wonder, especially as it will be active 24/7


I think the energy used by a movement sensor is infinitesimally small. The savings would far outweigh the energy usage.