Sentinel COOL-1 Thermostat and High Temperature Shutdown 

When you need a simple and inexpensive device to control the temperature of your growing area, your solution is the Sentinel COOL-1 thermostat. 

The COOL-1 is very similar to the thermostat in your home. You set the temperature you want to maintain, and the thermostat activates when it senses a change in temperature.

Simply set the temperature between 51° F and 115° F and the COOL-1 turns on and off your cooling or heating device as needed. Any cooling or heating device that operates on 120 volts and is 15-amps or less can be plugged into the COOL-1.

The Sentinel COOL-1 Thermostat has been pre-configured to shut off your HID lights if the temperature inside your growing area exceeds the temperature you've selected.

It has a remote bulb thermostat that can be placed up to 30" from the unit and has a big easy-to-read knob for setting temperature and will plug into any standard electrical outlet.

Carries manufacturer 3-year warranty.

More info from the Manufacturer (PDF format - Lots of detail.)