15 amps @ 120 VAC 32 to 120 degrees F 0-99% rH +/- 1'F +/- 3% rH The EVC-2 controls your temperature & humidity with digital accuracy. Photocell allows day/night temperature and humidity settings and also provides daytime C02 operation. The remote combination temperature and humidity probe allows the probe to be placed near plant canopy. It records and recalls minimum and maximum temperature and humidity levels. The EVC-2 has two temperature modes, heating and cooling with separate humidity control to add or remove humidity. Adjustable temperature deadband.