Plug the thermo cube into any standard 15 ampere outlets to provide electrical devices with temperature regulated operation. This dual receptacle device will activate when temperatures dip to 35 degree Fahrenheit and off when it hits 45 degree Fahrenheit. 120 volt rating. Ideal for home and farm applications such as pond de-icers, unheated rooms, pump houses, greenhouses, boats and RV'sPlugs into a standard 15 amp electrical outlet and turns power on automatically according to outside air temperatureTwo receptacles for use with more than one electrical deviceSaves money by using power only when temperatures require heatingTurns on at 35 degrees F, off at 45 degrees FWorks automatically to ambient temperatureSaves money by using power only when temperatures requireNo installation required2 tap