The Maxibright Daylight Lighting Controller is precise and versatile. It has been designed and manufactured to power your grow lights, whether you are using CMH or LED technology. This unit provides you with functionality like sunrise/sunset options, dimming on overheat and to simply control the times of banks of lights with ease. Connected via the iLink cables, you can daisy chain multiple lighting fixtures together and control them all from the one unit, with the simple touch of a few buttons. Two zones (A & B) controlled independently. Control for 400 HID ballasts or 100 LED drivers . Max HID ballasts per zone: 200. On Off 24hr timer Compatible with: 480W LED & 660W LED Dimming range (1% increments) LED – 20%-100% HID – 50%-100% Sunset and sunrise settings: 0-30 mins Temperature safety control Thermostatically controlled dimming Max LEDs per zone: 50