ETL listed for wet location. Fully automatic operation. Contains 4.8V Nickel-Cadmium rechargeable battery. 120/277V - Dual voltage. Operating temperature range: -10-DegreeC (14-DegreeF) to 40-DegreeC (104-DegreeF). Single face. Energy consumption of 2-Watts for red letters and 1-Watt for green letters. Estimated 25 year LED lamp life. Completely self contained. Automatic, low voltage disconnect protects battery from deep discharge. Wall mountable. UV Fiberglass, corrosion resistant enclosure. Universal snap-in and out chevron design meets all state and local codes (UL924). Limited 5 year warranty. Sealed momentary test switch and AC ready light. AC lockout feature reduces installation time. Replacement battery: RB-5 Royal Pacific is pleased to offer a wide selection of lighting and home decor in all styles, shapes, and finishes so you can be sure to find the correct arrangement to suit any situation. Royal Pacific products are designed for quick installation and are energy efficient which adds great value to your project, saving everyone involved time and money. With an extensive and varied catalog of industry leading lighting products, Royal Pacific continues to demonstrate why they are one of the strongest suppliers for both new and remodel multi-family housing construction.