With its unique construction comprising of dual wattage 18W and 24W operating power in four colour temperatures 3000K 4000K 5000K and 6500K this fitting is suitable for use in offices reception areas hotels restaurants shops schools hospitals and care homes. Its high quality PC thermoplastic diffuser provides a TP(a) rating to comply with fire regulations making it a perfect LED replacement for 2x18W and 2x26W PL fluorescent downlights. It has a very high efficacy of 92-109lm/W and wide ambient operating temperature range of -20C to 40C enabling 24/7 usage. It is suitable for switching by PIR Microwave or Photocell and is compatible with ROBUS R3EMPK4-PSU Emergency Pack. Dimmable with selected dimmers. 18W specs for 3000K/4000K/5000K/6500K- Total Power (W) 18.9/18.5/18.7/18.9 Lumens (lm) 1850/2010/2010/1940 Efficacy (lm/W) 98/109/108/102 Lux at 1m (lux) 690/750/750/720 24W specs for 3000K/4000K/5000K/6500K- Total Power (W) 25.5/24.9/25.2/25.6 Lumens (lm) 2360/2630/2600/2470 Efficacy (lm/W) 92/105/103/97 Lux at 1m (lux) 870/980/970/920