This Autopilot APCETHA analog environmental controller (DEC) accurately monitors and controls humidity, cooling, and heating with day/night temperature set points and PPM increments of 100. 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 preprogrammed with factory recommended settings for quick plug and play operation. Simply connect your fans, CO2 injectors, air conditioners, and dehumidifiers to the four separate 120 volt power outlets and customize your settings using the push button display. The APCECOTH is an indoor gardeners' dream come true for environmental control!