This advanced fully automatic three-stage 40 Amp battery charger is ideal for charging all types of 24 Volt lead-acid batteries ( Flooded / Absorbed Glass Mat (AGM) / Gel Cell) from a 120 V- 60 Hz or 230 V- 50 Hz AC source. By means of a DIP switch setting- conversion to a two-stage algorithm is possible to charge batteries connected to a DC load (DC UPS). The unit can also be used as a DC Power Supply. Features include overload- short-circuit and over-temperature protection. The unit allows charging of up-to 2 separate battery banks.Switch mode technology for high efficiency- lightweight and quiet operation.Automatic operation for ALL Lead Acid Batteries Flooded- AGM or Gel Cell.Can charge 2 banks of batteries simultaneously- no isolator necessary.Can be used as a power supply or DC UPS when used in conjunction with a battery.User Configurable AC Input voltage 120 or 230 VAC- 50 / 60 Hz.User Selectable ( by DIP Switch) for 2 or 3 stage- rapid and safe charging of standalone and loaded Lead Acid Batteries.-Half Power Mode- reduces maximum charging current to half the rated capacity- allows for safe charging of lower capacity batteries.Voltmeter and Ammeter for monitoring.Fan cooled based on output current.Protections: Short circuit- overload- reverse battery connection and over temperature.Includes temperature sensor to prevent under/overcharging of battery if temperature varies extensively.Input: 120 VAC or 230 VAC.Output: 24 VDC.Amps: 40.Remote Control: 900-RC.Dimensions: 15- x 9.61- x 3.82-.Safety: Listed to UL Standard UL-1564- EMI Compliant to FCC Part 15(B)- Class B.Applications:Automotive.Recreational vehicles.Marine.Communications sites.Battery back-up systems.