Replacement battery for Fire Alarm Communicator. Specifications: 1600mAh, 7.2V, Nickel Metal Hydride (NIMH). Compatible with: Fire Alarm Communicator. Replaces: 17-145, 17-145A, 31T, 6PH-AA 1500-H-C28, 9047, AA1500MAH and 6 more. ALARM DSC replacement battery designed for Fire Alarm Communicator devices. Designed to match the original manufacturer’s performance.