DDR-120 series is a DIN Rail type DC-DC converter with main features including DlN rail-type easy installatiorultra slim width (32mm),2:1 wide input voltage , fanless design,-40~+70 wide operating temperature,4KVdcIo isolation,150% peak load, adjustable output voltage and full protective functions. This series of models has various input options:9~18V/16.8~33.6V/33.6~67.2V/67.2~154V and variousoutput options:12V/24V/48V and can be used for industrial & railway control, security control, communicationsystem and other fields.Suitable applications include DC buck/boost regulator, increasing system insulation leveand voltage drop compensation along cable...etc.