This energy efficient, surface mounted integrated LED bulkhead features an emergency mode that allows the light to operate if mains power is disrupted.The emergency battery and driver are integrated into the bulkhead, requiring no additional installation. In emergency mode, it will operate for three hours at 20% of its full light output.The light itself features a tri-colour switch that allows you to choose from three different colour temperatures: 3000K, 4000K, or 5000K. It emits a bright 1700 lumens, which is softened by the bulkhead\'s opal diffuser.The Phoebe LED Melana Select bulkhead is built to last, with a durable polycarbonate construction, long 40,000 hours life, and maintenance free operation. It is IP54 rated, making it suitable for use in humid areas and bathroom zone 2. For more information about IP ratings and zones, please see here.3 hour emergency mode. IP54 rated. Instant full light. Not suitable for dimming.