Provides a 24 hour backup charge with AC power is unavailable * Works well with GE and Interlogix home security systems like the Simon XT and Simon XTi * Backup battery delivers a 24 charge. Keep two around the house in the event of long power outages. * Works perfectly with a Simon XT or Simon XTi home security system with LiveWatch alarm monitoring * Can be added to a wireless home security system with video surveillance cameras and more