Protection Degree of Protection - IP67 / NEMA 6 IECEx Certification · Ex nR IIC T5...T6 Gc · Ex tb IIIC T100˚C...T85˚C Db ATEX Certification · II 3 G Ex nR IIC T5...T6 Gb · II 2 D Ex tb IIIC T100˚C...T85˚C Db TS Certification · Ex nR IIC T5...T6 Gc · Ex tb IIIC T100˚C...T85˚C Db Specification · Volt.: 100V / 110V / 200V / 220V / 277V AC · Watt.: 2ft: 20W, 40W / 4ft: 40W, 60W · Amps: 20W-0.07A~0.20A / 40W-0.14A~0.40A / 60W-0.22A~0.60A · Frequency: 50Hz / 60Hz · Power Factor: cos≧0.9 · Ambient Temperature · -20°C ~ +40°C, T6 · · Optical Information · Color : Warm White / Natural White / Daylight / Cool White / Yellow (20W&40W) · CRI : ≧70 · Lum/Watt. : ≧100 lm (Excluding Yellow Light) · Beam Angle : X-110° / Y-110°