The Sentinel Therm-1 cooling or heating thermostat is an economical way to regulate temperatures in your growing area. 

To control any cooling or heating device that operates on 120 volts and is 15-amps or less, simply plug it into the Sentinel Therm-1 unit.

Once connected, set the temperature desired, and your device is turned on and off as needed to maintain the proper temperature. Simple, but effective.

The waterproof solid-state temperature sensor probe is connected with a convenient 50" cable for flexibility of location. Use it to control the air temperature, or, if you're careful to only submerge the metal tip, you can even use the Therm-1 to control the temperature of your nutrient solution or grow media.

The Sentinel Therm-1 thermostat is constructed with a rugged plastic molded housing and a dust-proof enclosure for longevity.

Dimensions: approximately 7.5" Long x 5.5: Wide x 4.5" Tall