Reliance Natural Gas Thermostat for Standard 400 Water Heaters

Replacement thermostat designed exclusively for original/factory Reliance heaters that have the installed electronic gas control valve. Fits Reliance Standard 400 natural gas water heaters with electronic thermostat control. Features a visible L-E-D indicator that blinks 1 time at 3 second intervals during normal operation, and includes an integral spark igniter. Provides improved temperature control and greater accuracy.