The Vent Axia VA100SVXT12 has a thermo-electric shutter plus a running light operating on the override only. Complete with an integral adjustable overrun timer and remote wall mounted transformer. The unit complies with Building Regulations relating to Bathrooms and WCs, is designed in a white finish and incorporates a Standard Thermal Overload Protection (S.T.O.P.) and is suitable for ambient temperatures up to +40 degrees centigrade. The fan is IPX7 rated and is controlled by a mains safety isolating IP44 transformer unit with SELV output which is located our of reach of anyone using the bath or shower and away from the spray area. Timer models should be isolated using a 3 pole isolator to comply with IEE Regulations.