WDT or internal heartbeat
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 Does mySensors code have native WDT which would allow controller to see if node is ON or OFF? 
 
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 @apl2017 most MySensors nodes are battery-powered and sleep to conserve power, which means they aren't "on". With that said, most examples transmit on regular intervals. The interval is configurable, so you can set it to a short interval if you are not concerned with battery consumption. 
 
 
					
				 
					
				