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.