Prism Style Incandescent Emergency Light Black - These Exit Emergency Lights are a must for safe work environments.Prism Style Incandescent Emergency Light features include: Decorative & Economical Units with Modern Appearance & Low Maintenance Completely Self-Contained Fully Automatic Operation Compact, Low Profile Design in Neutral Finish Push to Test Switch 6V 4.5AH Pure Lead Acid, Maintenance Free Battery 2 x 6V 5.4 Watt 939 Lamps Automatic, Low Voltage Disconnect(LVD) Universal Transformer for 120 or 277 VAC Replacement bulb: 939 Lamps Universal Mounting Plate Injection Molded, V-O Flame Retardant, High Impact, Thermoplastic Housing Charge Rate/Power “ON” LED Indicator Light 90 Minute Emergency Operation UL Listed for Damp Location 5 Year Warranty Order Qty of 1 = 1 Piece Below is more info on our Prism Style Incandescent Emergency Light