Hubbell dyn6i-4x dynamo industrial led emergency unit, nema 4x/ip66, 3w led lamps, self-diagnostics the dynamo provides bright & uniform illumination & is specifically designed for higher mounting heights above 9′, provides minimum of 90 minutes illumination when primary power is lost, flame-rated uv stable thermoplastic housing – fully gasketed & corrosion resistant w/ gray finish, led lamp heads are die-cast aluminum w/ polycarb lens, lithium iron phosphate battery, includes spectron self-diagnostics, 120-277v, nema 4x & ip66 rated