Led emergency light Characteristic: 1. Injecton-molded thermoplastic ABS housing 2. UL 94V-0 flame rating,fire-retardant 3. 120/277 V AC dual voltage operation 4. LED indicator light and push button testswitch. 5. LED lamps are operating in normal(AC input) and emergency (DC input) MODES 6. Nickel-cadmium battery(4.8v 650mA) delivers more than 3hours capacity to emergency lamps 7. 24hours recharge after 90 minutes discharge 8. Low voltage battery disconnection-preventing deep discharge damage to the battery) 9. Single or Double face configuration 10.Letters 6"height with 3/4"stroke 11.Innovative,snap-together design allows for fast installation 12.Replaceable directional chevron inserts are easily removed and reinserted 13.Universal(wall,side or ceiling mounting)