Titan Controls 702755 Mercury 3 Day and Night Fan Speed Controller, 120-volt
Automatically increases or decreases fan speed based on controller set points. Allows user to adjust dead band range to meet garden requirements. Temperature control range is 55Degree F to 95Degree F. 6 foot temperature probe is accurate to within 2 Degree F. Plastic enclosure protects internal components from dust and moisture. 6 Amps/120 Volts/60 Hz. 3 year warranty.