Compatibility: A-All-Purpose-Power-Devices Modular Mount Adapter w. Screw Terminals. Convert expanded input range of 9 - 42 VDC to 13.8 VDC output for powering communication / navigation equipment. Ideal for powering voice, data and navigation transceivers in mobile & marine applications. Rugged modular design DC to DC converter to provide excellent 13.8 VDC regulation and noise filtering. Can be used for all mobile radio & communication equipment as well as all peripherals that operate on 12VDC. Input / Output terminal screws are provided for connecting the In/Out cabling. User can choose the cabling for Input/Output that best suits the installation. Flanged ends for easy mount installation. Expanded wide input voltage range of 9-42VDC.