Warranty: 25 Years Manufacture Defect Mains supply Voltage Range: 216V a.c to 253V a.c 200V a.c to 250V a.c 120V a.c to 134V a.c Mains supply Frequency: 50HZ 60HZ Product power: 1000W IP rating:IP2XD DP switches in the range conform to: Bs3676, BS 4177 note: Transformer must be suitable for dimming using phase delay (leading edge)and NOT only phase cut(trailing edge)type of dimmers. These dimmer switches are not suitable for use with Florescent Lamps or Energy Saving Lamps