This controller will allow you to precisely monitor and control the environment in your grow room. Featuring an easy to use analog interface, this digital controller is easy to program and use. Each set point (temperature, humidity and CO2) are programmed using a set of dedicated knobs. Readings are displayed on easy to read digital displays. The sensor which measures the temperature, humidity, light and CO2 levels in your room attaches to the controller with a 15 ft cord. Enclosure resists dust, rust and moisture. 15 Amps maximum/120 Volts/60Hz.