PAPAILIAS, Inc. series REX-HI-LED-00, 115VAC High-Intensity LED compact, explosion-proof light UL-844 & C-UL/CSA C22.2 listed to provide lighting and viewing through a single sight port.Explosion-proof, UL-844 and C-UL/CSA C22.2 No. 137 listed, electric lighting fixtures are used in hazardous (classified) locations. Lights for single port viewing have been designed to meet the needs of our customers who require lighting and viewing through a single sight glass.PAPAILIAS, Inc. series REX-HI-LED-00, 115VAC uses a high intensity LED [HI-LED] light engine technology to rovide bright, glare-free illumination of the interior of vessels, tanks, hoppers, silos, mixers, and other normally closed containers in hazardous locations requiring explosion-proof equipment. These fixtures do not generate excessive heat, feature long lamp life and consume less energy than their Halogen equivalents.