Abacus Electric only Kits enable you to heat your towel warmer during the summer months without the need for your central heating system being on and are factory filled with a special heating solution. With a standard heating element, the wattage of the element is matched according to the size of the radiator. The element will then heat the liquid inside the radiator and the heat is dispersed by the surface area of the radiator. Thermal cut-out for extra protection should the element become too hot. Please note there is no control over the radiator or room temperature unless used in conjunction with a digital wall controller. 12 month Manufacturers Guarantee.