ROOT!T Heat Mat Thermostat - Seed & Seedling Mat Temperature Control A quality ROOT!T electric heat mat thermostat for use with ROOT!T Heat Mats. It has a temperature control range of 10C to 30C. Easy to read digital display. FREE POSTAGE £33.95 Quantity: at £33.95 each Add To Basket A top quality horticultural heat mat thermostat from ROOT!T. Helps maintain the optimum temperature for plants and seedlings. Easy to use and control. 1 Year manufacturer's warranty. For use with all ROOT!T heat mats.