Check the listing for details. Hortilux GRC1 Controller. Condition: New. Listed at 79.99 USD. The GRC1 controller can switch all the interconnected systems on and off with its internal timer, adjust them to your required output level (in percentage or exact output power) and even simulate sunrise and sunset to gradually adjust the climate in your grow room when your lights go on or off. You can connect up to one-hundred systems to one controller and control two separate rooms or two accessories such as a humidifier and air conditioning. For use with Eye Hortilux DE 1000-VS, sold separately from system.Features:Set on/off light schedulesSet any wattage between 600 and 1150Sunrise and sunset featureTemperature sensorsTemp safety shutdownAuto dim and emergency shutdown temperature controlFails to “OFF” when power is interruptedPrevents ballast current in-rushCan control 100 systemsCan control two accessories (ie humidifier, CO2, air conditioning)English, French, Spanish, German, Dutch language settingsSpecifications:Input Volts: 100V-240V AC / 50/60Hz-5V DCBallast Wattages: 315W, 400W, 600W, 630W, 750W, 1000WOperating Temperature Range: 32-95°F (0-35°C)Operating Humidity: < 80%Output Levels: 50-115%Outputs: 2Temperature Sensors: 2Number of Ballasts Per Output: 50Number of Ballasts: 100