The REDARC DPS2420 is a 24V 20 amp DC Power Supply that provides greater efficiency with regulated power for all sensitive load requirements, such as lamps, TVs, radios, fridges, and pumps with voltage output from a 24V automotive power system. Robust and flexible installation option Due to the reduced noise from the fan free power supply, there is no interference to power hi-tech radio systems. Additionally, the DC Power Supply has built-in protection against spikes and surges and is fully encapsulated for use in marine applications, as needed. For certain situations, the DC Power Supply is a suitable option for those who want to install an auxiliary battery. Need help? For help in choosing the best dual battery setup for your needs use the free?REDARC dual battery selector. California residents: see?Proposition 65 information