FSRDL 2 S12: FSRDL 2 S12 luminaire is a recessed round fitting suitable for subsurface rail applications. Designed in accordance with fire precautions for subsurface rail stations (Section S12). Complies with London Underground subsurface standard S1085 utilising low smoke, zero halogen cables and control gear. IP65 and rated to IK08 (5 joules of energy). Recessed luminaire fits into a standard cut-out of 250mm. Aluminium body with clear or frosted toughened glass diffuser held against gasket by tamperproof screws. Integral electronic control gear with fused terminal block. Efficacies of >94 lm/W. Suitable for surface or semi-recessed ceiling mounting and finished in smooth white polyester powder coat. Colour Temperature:4000K CRI:>80 LED Lifetime L80B10>50,000h at 25oC ambient. Driver Lifetime up to 100,000h at 25oC ambient.