Fixed and portable luminaire for installation and use in hazardous (classified) locations Class I, Division 2, Group A, B, C and D; Class II, Division 2, Group E, F and G; in accordance with the National Electrical Code, NFPA 70. Instant on/off operation, superior output, color rendition index compared to HPS, LPS, MV and HID. Compact design combines form and function, available in 40W, 100W, and 185W, efficiency at 100 lm/W.