A fan speed controller with a daytime twist, the Ice Box Thermostat will idle your fans up and down depending on the temperature in the space.
The Ice Box Thermostat features a photocell, which allows different temps for day/night, and a powerful 7 amp relay that allows you to control several fans at once. This controller is the only one we know of that will idle instead of stopping your fans completely during the lights-on cycle. When used with fans on reflectors, there will be a constant supply of air movement to keep the canopy from overheating.
Excellent for use with any fan set up, and exceptional when used in conjunction with an Ice Box.