Item Type: LED Red Exit Sign Material: PC, ABS Power: 2 x 3W Battery Type: Nickel Cadmium Battery( Shipped With Built In Battery ) Battery Capacity: 1800mah Emergency Time: About 120 Minutes Package List 1 x LED Red Exit Sign 1 x Manual 2 x Expansion Screw 2 x Screw 1 x Accessory 1Excellent ABS Material: This LED red exit sign is made of excellent ABS material, which is sturdy and wear resistant, not easy to be damaged and has a long service life. 2Super Bright LED Lights: This LED red exit sign is equipped with super bright LED lights to illuminate every corner in the dark. 3Built In Nickel Cadmium Backup Battery: This LED red exit sign has a built in nickel cadmium backup battery that provides 120 minutes of emergency operation during a power outage and can be safely recharged. 4Easy Installation: This LED red exit sign is very easy to install, you can mount it on the wall in just a few minutes. 5Wide Application: This LED red exit sign is widely used in home blackouts and commercial facilities to provide illumination for schools, churches, hospitals, cafeterias, commercial and industrial buildings, office buildings, exit doors or staircases, and more.