The Autopilot APCET 24-hour analog thermostat allows you to control the temperature within your growing environment. The APCET is an adjustable thermostat that can be used as a cooling or heating controller. The user can choose to have different day and night temperature settings which are maintained automatically by the built-in photocell. The temperature knobs make it easy to adjust the settings and provide a quick visual verification of the current set points. The LEDs on the front of the unit will turn on and off to show the user the current conditions. The APCET is an affordable way to control temperature.