Made of impact-resistant polycarbonate, UL-listed Weathergard Model 626 withstands abuse and moisture indoors and out. Sealed battery powers dual halogen spotlights for 90 minutes during outage, then recharges within 24 hr. Built-in safeguards prevent circuit overload and battery failure. Snap-off cover grants easy access to interior, yet protects against tampering and vandalism. Smooth surface and rounded corners resist accumulation of dust and debris. Optional self-test cycles weekly or biannually.