The commercial export symbol is made of injection thermoplastic material, UL-94-Volt-0 flame flame retardant. The super bright red/green letters export LED emergency lights are visible to the emergency light of 100 feet away, and they play an emergency warning role. The LED emergency export logo has built-in NI-CD 3.6-Volt spare battery to provide at least 90-minutes of emergency operations during the power outage and can be charged safely. 120-Volt-277-Volt AC universal voltage operation, with 3 emergency lights with 3 installation options, installation on the top, side installation and rear frame (including Tobe). The battery spare LED exit light is widely used on the face of double -sided faces. It is suitable for outdoor and indoor universal locations, such as office buildings, exit doors or schools, churches, hospitals, cafeterias, commercial buildings and industrial buildings.