These Chassis control up to 16 modules with up to 8 relays per module. A large variety of different switch modules are available to build almost any configuration. Modules are available to build matrix or mux configurations or discrete relay modules. Input detection modules, output driver modules and proto board modules allow custom systems for almost any application. LEDs on the front panel show switch and power status.

Dimensions:
19″ Rack Mount (483 mm)
15″ deep (381 mm)
3.5″ (90 mm), (2 RU) high.
Weight: 15 to 25 lbs (7 to 11 Kg) max
AC Power : 50 to 150 Watts max. 110/220 selectable.

link to switch module selector