I have a camper van in my driveway. I have a lithium battery heater that is energized when a certain low temp is achieved. I have a temperature sensor relay that energizes the heater (relay NO switches to closed). I would like a notification when the heater energizes. The van is out of range of WiFi or zigbee. My plan is to use YoLink door sensor and remove the reed switch and solder in a couple of wires to the temp relay (negative side so that when relay energizes heater it will also fake out the sensor into thinking that the sensor is closed (by magnet)). Is there a way to do this otherwise?