Superior Quality: -molded thermoplastic housing with engineering grade. 5VA flame retardant, high-impact , continue to operate in case of fire or earthquake. 90 Duration: Built-in Battery Backup.High-density NiCd battery provides min 90 minutes of emergency operation time for LED lights during power outages. Battery is included in . Flexible installation: There are 2 types of installation including ceiling mounted and back mounted and it can be widely used in commercial facilities to provide emergency lighting in different locations. : The exit sign has bright adjustable lights on each side of the sign with 3 angle adjustments - 340 horizontal rotation, 220 vertical rotation, and 150 sideways rotation. These adjustable lights illuminate the path to safety. Colour:White Material:plastic Package Contents: 1 * LED Exit Sign Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.