This temperature control unit controls room/cooler/cave/cellar temperature when used in conjunction with a Kreyer fan unit.  Kreyer fan units are plumbed to a Kreyer Glycol cooling unit.  This unit turns on and off an optional solenoid placed at the inlet of the fan unit, which allows chilled glycol to enter the coils on the fan unit, while also turning on the fan(s) that blow cold air out into the room.   

Requires a fan unit, solenoid valve, & connection cable to function.  Fan unit must be plumbed to a glycol machine.