Killark VSL1630F2SG - Integral driver – maintains fixture’s compact profile to fit in existing spaces. Ambient suitability -40°C to 55°C. World Voltage 120 - 277VAC 50/60Hz. Instant On – Including after power interruption. Solder-LESS LED Board Connections – Vibration Resistant. LM80-08 Measurement of lumen maintenance for LED light sources. LM79-08 Certified “Absolute” Photometry, including Chromaticity Color for Solid State Lighting. L70 Values - Industry Nomenclature for Hours of use to 70% of Initial Lumens (TM-21+ Cal.) The VSL Series is a Vapor Tight/ Utility fixture using energy efficient LED's. This fixture is made with a cast copper-free aluminum housing and mount that is suitable for harsh and hazardous environments. With the design of this fixtures internal heat sink keeps a clean look on the outside of the fixture creating a LED fixture that does not contain external heat fins. - Class I, Division 2, Groups A, B, C, D - Class I, Zone 2, Groups IIC,IIB,IIA - Class II, Division 2, Groups F, G - Class III, Divsions 1 & 2