✮【US STANDARD】The emergency light is made of injection-molded thermoplastic ABS shell, UL-94V-0 flame retardant, so that the emergency light can continue to operate in the event of a fire or earthquake. Each adjustable lamp head is equipped with super bright LED lights to illuminate every corner in the dark. ✮【EFFICIENT & LONG-LASTING BATTERY LIFE】This commercial emergency light has a built-in nickel-cadmium 3.6V backup battery that can provide at least 90 minutes of emergency operation during a power outage and can be safely charged. Use 120V-277V AC universal voltage operation, suitable for parking lot, corridor. ✮【EASY INSTALLATION】The installation of the LED emergency light is very simple, it only takes a few minutes to install on the wall. Its backplane fits most standard junction boxes and snaps into place for fast and safe electrical connection. ✮【WIDE RANGE APPLICATION】This fire emergency light is widely used in home power outages and commercial facilities, to provide lighting for schools, churches, hospitals, canteens, commercial and industrial buildings, office buildings, exit doors or stairs and other locations. ✮【SAFETY GUARANTEE】CM MZY uses high-end LED lights and advanced optical design to create the best lighting experience for you. Our LED emergency exit lights have passed UL certification and are safe and reliable. The warranty period is 5 year. If you have any questions, please contact us. Led Emergency Lights