The Skytech TS-3 wired wall thermostat can be connected to remote ready (millivolt)gas valve or electronic spark ignition systems. The thermostat features a large LCD screen to display room and set temperature in °F and °C. Can be used to simply turn the fire on and off or set to control the flame thermostatically. No electricity required; operates on two 3 volt batteries. Easy to install by connecting 18 gauge stranded or solid wires from the TS-3 wired wall thermostat to the millivolt gas valve or electronic spark ignition module. 5 year warranty.