![]() In HA, I have a boolean variable called “snow on the roof” and expose it so my mother can turn it on or off. (Because she has two roof heat strips.) I also added a Thermo Cube and small LED light bulb for the box in hopes of keeping it warm (since it’s outside). I bought an outdoor plastic utility box, installed a Tripp Lite power strip with breaker and on/off switch, and two Sonoff S31 smart outlets. I also have a DS18B20 temperature sensor sticking out of the garage eve to get outdoor temperature. I have a ESP8266 in the detached garage to detect garage door open and close. I have my version 2 setup at my mother’s house. If you have any suggestions or alternative approaches, please let me know. ![]() I came across one posting ( ) but it’s based on temperature so I don’t think it would work in my case. I’ve searched the forms for related ideas. Keep the HS401 energized for at least 24 hours following a change in weather conditions – snow to clear for example. To overcome this, I thought a timeout condition could be added. One problem I see with this approach is that current conditions may change from snow to clear, or some other state before all snow on the roof has melted. I thought about using current weather conditions, specifically “Snow”, to activate the HS401. What I’m unsure of is how to configure the automation. The idea would be to have HA weather control the on/off cycle of the HS401. I see this extended on time as energy wasting and wish to install a TP-Link HS401 extension receptacle ( ) as additional control over the heating cable. Until it gets much colder, I suspect the sensor will not dry sufficiently to turn off the heating cable. ![]() At this time of year, weather here can be very damp. I suspect that until the sensor cable dries completely, the heating cable will remain on. The gutter isn’t filled with water, it’s just damp along the bottom. The snow’s now gone but the control unit won’t shut off! The gutter is damp which I think is preventing the control unit from shutting off. After snow started falling the sensor detected moisture in the gutter and on the roof then turned the heating cable on. The heating cable remained off until our first snow fall, a week ago. This setup works well when roof and gutter is completely dry. The cable is currently operated by a non-smart control sensor that turns it on when the temperature is near or below freezing and moisture is detected by a sensing cable installed in the gutter and along one edge of the roof. I’m looking for ideas to control the “On/Off” cycle of a roof heating (de-icing) cable.
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