Energy harvesting switches
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 I got a new product update from RS components today with these on, I never new such things existed. http://uk.rs-online.com/web/p/rocker-switches/8736671/?origin=PSF_428186|rel they use the operation of the switch to power it, activations are picked up by a receiver module. And it's not over expensive either. 
 
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 @stephenmhall There's also the EnOcean line of products: https://www.enocean.com/en/smart-home-and-home-automation/ Cheers 
 Al
 
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 @Sparkman These are very cool! do you have them working at your place? would love to have some extra light switches without worrying about batteries. 
 
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 @Moshe-Livne I don't have any of them, but know a few people that have played around with them. I installed all z-wave switches a few years ago, so likely won't change to a different technology for my switches for quite a while. I was first interested in the self-powered motion sensors as I would like to install a few in locations where changing batteries would require a ladder. Cheers 
 Al
 
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 @Sparkman would have been nice if they could charge from motion, wouldn't it?  
 
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 @Moshe-Livne said: @Sparkman would have been nice if they could charge from motion, wouldn't it?  That would be great  
 
 
			
		 
			
		
 
					
				