How identified: Identified by watching thermostat turn on/off while receiving notifications and viewing timeline. Confirmed with kill-a-watt.
Additional Comments: 180’ of 3 watt/foot cable places 3” apart for 12 watt sqft heat. Using DualTemp DT-02 thermostat set at a constant 95 degrees. Runs approximately 25% of the time to maintain this temperature (6 hours a day).
Waveform Source. iPhone App device power meter