120v, battery backup 
Series MLW – Interior Wall Pack Spec Sheet Installation
GENERAL DESCRIPTION
At only 5” x 5” in width and height and 2” profile depth, this unit is the smallest emergency wall pack available. It has high lighting output, allowing fixture spacing up to 45 ft for 1Fc average illumination along the path of egress. The all-aluminum construction can be custom finished to match any interior.
All MOONLITE fixtures have a dual lighting function, for normal ambient lighting as well as emergency lighting. The night lighting option delivers big power savings, or can act as a low-energy booster for conventional ambient lighting fixtures.