This Autopilot APCECOTH greenhouse master controller (GMC) accurately monitors and controls humidity, temperature, and CO2 levels within your grow room. The controller has four NEMA 5-15 receptacles and a remote combination probe with highly accurate sensors. The remote probe is designed to resist EMI/EFI from electronic ballasts and can be extended 15 feet from the controller. This controller has been pre-programmed with factory recommended settings for quick plug and play operation. Simply connect your fans, CO2 injectors, air conditioners, and dehumidifiers to the four 120 volt power outlets and customize your settings using the push button display. The APCECOTH is an indoor gardener's dream come true for environmental control!