There are several companys who build these switches. Arcus build them in the look of a DP2000 or DP8000.
Most of those switches are just passive switcher, so no electronic inside, just a switch with the corresponding number of contacts. Also the switcher from Arcus are build in this way (e.g. 4 Line switcher: 2 x 4 x 3 contacts for both inputs, 1 x 4 x 3 contacts for output)
There are several companys who build these switches. Arcus build them in the look of a DP2000 or DP8000.
Most of those switches are just passive switcher, so no electronic inside, just a switch with the corresponding number of contacts. Also the switcher from Arcus are build in this way (e.g. 4 Line switcher: 2 x 4 x 3 contacts for both inputs, 1 x 4 x 3 contacts for output)