Ex “e” Autonomous Emergency Lighting Block for use in Explosive Atmospheres Zone 1, 2, 21 and 22. Offers great practicality in installation, opening and closing, in addition to providing tool-free maintenance (hands only). Contains micro-switch that de-energizes the luminaire when the cover is opened, and a breather to prevent water condensation inside the luminaire. Battery with autonomy of 180 min.