Day/Night Temperature Controller The iGS-020 temperature controller will operate your heating or cooling equipment in accordance to user day and night setpoints. The ambient temperature is displayed on the luminous bargraph. The precision temperature sensor (1°C) can be calibrated and the differential of operation is adjustable. This controller is also available with a remote (10 feet) sensor (iGS-020R). Technical Specifications : - ±1°C precision temperature sensor - 0° to 40°C control range - Maximum load : 120 VAC, 15 Amp, 1 HP