Magnet Power Supply This battery maintains stable and constant voltage Equipment operation LED indicator Battery protection in case of failure or low voltage Input voltage: 110VAC Output voltage: 12VDC 3A Requires 12V5AH - 12V7A batteries (not included) Compatible with Yale electromagnets SKU Description 0009112 Magnet Power Supply Related Products: Maglocks Module + Remote Control 600 Maglock Kits