The Grozone Simple Climate Controller is a perfect control center for any grow room. A more user-friendly version of the HTC Climate Controller: It is capable of controlling CO2 enrichment, as well as heating or cooling, humidifying or dehumidifying, and/or ventilation devices simultaneously. Just connect your fan, your dehumidifier or humidifier, your CO2 generator, set the knobs, and you're ready! The SCC1 prioritizes equipment, and implements on/off delays as well as day/night-only activations to ensure maximum effectiveness of environmental control equipment. The unit also features several built-in failsafe functions to protect the garden in the event of equipment malfunctions, adding peace of mind and value. The SCC1 is a great choice for any gardener looking to consolidate climate control settings into one easy-to-use access point. Features:Two built-in LVC1 (low voltage relays) to control high power HVAC systems (A/C, dehumidifyier, etc.)Optional output boxes for heating (OB2) and fan speed control (OB2-V)Empty CO2 tank detectionAutomatic competing equipment detectionHigh-temp and low-temp limits3-year manufacturer's warranty Included Modules and Accessories:One main controller box with one power cordThree lint filters to protect CO2 SensorOne user guideOne screw kit.