Heat Mat Thermostat 

The Heat Mat Thermostat is Hydrofarm's electronic temperature controller for the heat mats used under plant trays. 

Compatible with all heat mats, the Heat Mat Thermostat lets you have complete control over the temperature of the growing medium of your tender seedlings or plants clones.

It also provides constant optimum temperatures for sensitive garden plants, such as orchids or mushrooms.

The Heat Mat Thermostat controls the root mass temperature in colder or warmer environments.

It has an illuminated indicator light and a standard 120V 3-prong ground plug.