The Hydrofarm Jump Start MTPRTC Digital Temperature Controller is new and improved. The 1000-Watt heat mat thermostat is digital for greater accuracy. It provides constant optimum temperatures for specific crops and controls the temperature in colder or warmer environments. The MTPRTC has a controllable range of temperature from 68°F to 108°F or, for those who prefer the Celsius readout option on the controller, 20° to 42°. This controller is compatible with all heat mats but is optimized for Hydrofarm Seedling Heat Mats. The controller comes with an illuminator indicator light and a 3-prong ground plug, making it easy to hook up and use. Get an exact temperature reading on all your crops with the Jump Start MTPRTC Hydroponic Seedling Heat Mat Digital Temperature Controller.