Power supply board 75W, 6A/12V or 3A/24V Power supply board 150W, 12A/12V or 6A/24V 8 relay lock control outputs fused at 3A per output 8 auxiliary DC outputs fused at 3A per output 24v Battery 12v Battery Enclosure 20W x 24H x 4.5D with Mercury/Lenel backplate and door mount option