DRS-480 is a 480W AC/DC DIN rail type security power supply series. In addition to the primary output there is an additional charger circuit that will automatically adjust charge current depending on the primary output current.DRS-480 accepts the universal input between 90VAC and 305VAC and supports output 24VDC,36VDC, and 48VDC nominal systems. With high efficiency up to 93.5%it can operate with free air convection cooling under -30Cthrough 70Cambient temperature. In addition to the key protection features such as overload protection. over voltaae protection. battery low voltaae disconnect and battery reverse polarity protection.the DRS-480 also provides Form-C contacts and LED indicator alarm sianals for AC-fail, battery low,charger fail,and DC-OK to allow easy integration into security systems that comply with local alarm codes.