Registered Community Design 000973912-0001. Patent pending. Replacement lamp for GU10 halogen lamp. Lasts 10 times longer than an equivalent incandescent lamp (10,000 hrs). Not suitable for use in Fire Rated Downlights . Maximum ambient temperature (Ta) 50°C. Dimmable from 25-100% with AU-DSP dimmers. If used with occupancy sensors these should be set to a 20 minute minimum.