The MXA018 features mains failure detection, load control relay, a battery charger and a battery safety cut-out to prevent over draining. Applications include emergency and safety lighting, security and control system back-up. The MXA018 may also be wired to automatically default to battery supply if mains is not available to run portable equipment. An in-built LDR can be used to detect ambient light to prevent battery drain during power outages when lighting is not needed. A test switch is provided on-board.