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Larson Electronics has announced the release of an explosion proof LED exit sign with four-inch letters rated for use in hazardous locations. This unit is equipped with a 1.1-watt LED lamp providing a 3-hour runtime and self-diagnostic system. This unit is ideal for use in hazardous locations as a failsafe during power failures and has a surface mount design. The EXP-EMG-EXT-LE6-1L-TAE explosion proof LED exit sign uses external power to operate the LED array under normal circumstances and uses battery backup (3.6V NiCad battery) during power outages for three hours, or until power is restored. This unit has a backlit LED array each containing eight LEDs and features brown-out, short circuit and voltage surge protection. This unit has low voltage disconnect to prevent damage to the battery caused by a deep discharge. Larson Electronics’ explosion proof LED exit sign has a 15-year lifespan, is approved for outdoor use and is resistant to saltwater making it ideal for use in marine environments. This unit can operate in environments with temperature ranges of 0˚C to 60˚C and features a low voltage disconnect. This unit operates on 240V AC 60Hz and does not include a junction box or fixture seal (these are provided by customer). This exit sign is rated for use in Class I, Divisions 1 and 2, Groups B, C and D; Class I, Zones 1 and 2, Groups IIB+H2; Class II, Divisions 1 and 2, Groups E, F and G; and Class III, Divisions 1 and 2 hazardous locations. This unit can be mounted on flat surfaces and adjusted horizontally and vertically. Suitable applications include in exit-ways of hazardous locations.