This ingenious device enables the cultivator to automate the process of ventilation in the growing environment. Once a baseline fan speed and desired temperature are set, a thermostatic sensor tracks the temperature and increases power to the fan as temperatures rise. Capable of controlling motor speed from 0-100% (a minimum of 30% is recommended for most fans), with a 10 amp capacity. Temperature differential can be set from 1-21° F (set to 6° at factory). Features include adjustable automatic shutoff, RFI noise filter and a temperature sensor that can be extended 1000 feet. Comes in a watertight housing. 2 year warranty.