Piston with time

[Chris_C]

Maybe this approach from @Carlos_Juarez and @James

Repeat light off and on on a looping timer?

I think this is what @Carlos_Juarez suggested: Trigger: When the light/heater is changed to “on” Flow: Delay 10 minutes, turn light/heater/ “off”, delay another 10 minutes, and turn light/hearer “on” (this last action will trigger this rule again, and loop.) And you can add an IF_Condition using a Variable or Virtual Switch in the beginning of the Flow to control if you actually wants to “disable” all the activities in the flow. So if you don’t want it to be turn off 10 minutes later and loop…