How do Warmup thermostats work?
4iE Smart WiFi Thermostat
Warmup thermostats heat in waves for highest efficiency.
At the time set to turn on, the thermostat turns on at 100% until it hits the target temperature. Once there, the thermostat completely shuts off until it drops below a few degrees. Once down a few degrees from the target, it turns back on at 100% because the heating cables connected to the thermostat are constant wattage wire