Registered Community Design - 001935081. 8W High Power CREE LEDs. TCS (temperature Control System) protects the internal electronics against overheating. 330lm typical output. 46 Lumens per Watt output allows compliance with the Building Regulations Approved document L1A/B requiring the use of energy efficient lamps in dwellings. Mains supply voltage 220V - 240V . Very efficient with a power factor of 0.86. Dimmable with most common dimmers. Average lifetime up to 45,000 hours. 3 Year guarantee.