Product details:

The t4398 thermostat provides precise temperature control of resistance-rated electric baseboard heating equipment with minimum droop. The t4398 controls room temperature within 2F (1C), regardless of the load of the baseboard heater. The vapor-filled dual diaphragm sensing element is more sensitive to temperature changes than a bi-metal sensor. This accuracy, usually associated with low voltage thermostats, Electric heat thermostats are often affected by the heat generated in the control. Temperature control points may vary or droop 2 to 4F to depending on the load demand. Temperature settings are adjusted to offset this. The t4398 provides precise control with minimum droop. This allows better control of room temperatures from day to night and season to season thus saving energy. FeaturesFor control of resistive-rated baseboard electric heatersReplace virtually all standard wall-mounted line Voltage thermostats. Extremely sensitive to temperature changes.