The provided Extra Long Backup Dual Head Industrial Emergency Light is designed for providing extra long backup. Presence of two light heads ensures more coverage area. You can adjust these lights horizontally as well as vertically for a clear view. This emergency light is powered by powerful lithium ion battery and you can avail this battery in different backup durations such as 4,6,8,12 & 16. The light fitted in this Extra Long Backup Dual Head Industrial Emergency Light can penetrate smoke to some extent.