Exit Sign, Letter Color Green, Number of Faces 1 or 2, Directional Indicators – Emergency Lighting and Exit Signs Universal Field Selectable Chevrons, Lighting Technology LED, Housing Material – Emergency Lighting and Exit Signs Plastic, Housing Color – Emergency Lighting and Exit Signs White, Emergency Back Up Battery Yes, Battery Chemistry Nickel Cadmium, Voltage – Emergency Lighting and Exit Signs 120/277, Number of Lamp Heads 0