The NORCOLD 639866 Thermostat is a high-quality HVAC control device designed specifically for RVs, trailers, and campers. Manufactured by Norcold, a reputable brand in the industry, this thermostat is essential for maintaining the optimal temperature inside your recreational vehicle. With its durable construction and precise temperature control capabilities, the Norcold 639866 Thermostat ensures comfortable and efficient heating and cooling systems in your RV.