Versatile horizontal or vertical mounting options allow for flexible field installation based on space constraints

Two-Way Configuration: Ideal for two-position hydronic control

supplemented by a mechanical flag indicator that tracks the physical movement of the armature

High Dielectric Strength: Rated for 440 Volts AC to handle voltage spikes and harsh summer operating temperatures without degradation

the switch automatically closes the circuit

Resideo T4398B1029 Thermostat Versatile horizontal or vertical mountingThe Resideo T4398B1029 is a heavy duty high performance electric heat thermostat engineered for precise control of electric baseboard heaters, convectors, and 1 stage fan forced systems. This line voltage thermostat features a vapor filled dual diaphragm sensing element that ensures high sensitivity to temperature shifts, maintaining a tight 2 degree differential for consistent load management. Designed with a DPST switch configuration and a positive