To provide a DC outlet capable of supplying a DC power supply having a voltage value proper to DC equipment, and provide an outlet device using that DC outlet.

Three fixture bodies of the DC outlet A at the maximum are aligned in a mounting frame of a large square-shaped successive wiring fixture, and each fixture body is formed in a size corresponding to one piece of the mountable module dimension. This DC outlet A is equipped with power supply input terminals T1, T2 to which electric wires from an external DC power supply E1 are connected, an outlet part 20 in conforming to the IEC standard, which is installed at the front face of an outlet body and to which a plug for the DC power supply is detachably connected, and a DC/DC converter part 30 by which the DC power supply E1 supplied to the power supply input terminals T1, T2 is converted into the voltage value in conformance to the outlet part 20 supplied to the outlet part 20.