The Securitron AccuPower AQD3 Series of switching power supplies are dual voltage, supervised units with a battery charger. These field selectable units have a fast battery charge reserve. They provide a maximum 3As at 12 VDC or 1.5As at 24 VDC, with up to eight (8) independently controlled, power limited outputs. Rated up to 2.8A/1.4A continuous output. Dual-voltage 12/24 VDC field selectable. Tolerates brownout or overvoltage input from 90-240 VAC. Thermal shutdown protection comes with auto restart. Circuit breaker protects against Overcurrent and reverse battery faults. Includes battery charger and power supervision. Low battery disconnect prevents deep discharge. Dedicated voltage enables faster battery charging even under full load. MagnaCare lifetime replacement,no fault warranty. Power supply outputs are Class 2 power limited. Expandable up to eight (8) independently controlled power limited outputs. Available with configurable access control input/outputs with fire trigger in either PTC or with fuse/ dry contact option, fire relay only, or configurable outputs with fire relay input. LED indicators and form "C" contacts provide supervision. Universal input 90-240 VAC. Supports up to two (2) sealed gel, AGM or wet lead acid batteries. Includes 14" x 9" x 3.5" cabinet. Operating temperature is between -4 to +104F (-20 to +40C).