To provide a supervisory system rack that is consistently associated with a DVR server, electronic devices that are connected to the DVR server, and a rack, is neat, is of a sense of unity, and can be of a fine sight.

The rack 1 has a cover plate 11 and a bottom plate 12, a pair of front racks 1a, 1b that are extended in parallel; and a pair of rear racks 1c, 1d, a pair of the racks 1a, 1b and a pair of the racks 1c, 1d are opposed to each other, and are connected to the plate 11 and the plate 12. A plurality of supervisory devices 2 are provided with each panel 21 that are disposed on a pair of the racks 1a, 1b. Each panel 21 is formed in the same width, and is formed in such a height that a certain height is set as a unit and the unit is multiplied by an integer; and each panel 21 can be continuously mounted in a height direction.