The Sure-Lites UEL emergency light housing is constructed of die-cast aluminum with a clear polycarbonate shield that protect against rain, moisture, cold, corrosion, dust, and vandalism. The light includes a nickel-cadmium battery, self-diagnostics, a photocell laser test, and four torx head tamperproof screws with a center pin reject. Two adjustable 12-WMR16 lamps provide egress coverage for light during a power outage. The lamp is UL-Listed for -35°C to 50°C ambient environments.