In enclosed growing areas, heat and humidity can build up beyond optimum levels. These controllers can activate cooling devices such as circulation fans, dehumidifiers and exhaust fans, as well as shut off Co2 systems to preserve the gas supply. The controller also provides an additional outlet which is always on for interior circulation fans or ionizers. Features a built-in relay for coordinating Co2 injections with repeat cycle timers. Temperature range is 10-110 degrees F. Humidity rangeis 20-80%. Need to use with a 24 hour timer.
The CT-DH3P climate controller features a built-in photo sensor which eliminates the need for a timer. Only activates when light is available.