WHITE-RODGERS™ Line Voltage Thermostat, 120/240 VAC, 2 A at 120/240 VAC, 16.7 A at 120/240 VAC, 4000 W Maximum at 240 VAC, 2000 W Minimum at 120 VAC, 50/60 Hz, Non-Programmable Programmability, Open On Rise, SPST Switch, 0.5 deg C Differential Temperature, 45 to 90 deg F Temperature Settings, 32 to 99 deg F Ambient, 85% Non-Condensing Humidity Rating, Vertical Mounting, White, 5 in H x 4.2 in W x 1-1/4 in D