PLC Mounting Boards: Type - I/O Module Mounting Rack; Use With - Standard I/O Modules; Module Capacity - 4; Interface Connection - Field and Power: (9) Screw Terminal Strip; Mounting Type - Plug-in Relay Board; Dimensions - 4.50 x 3.50 x 2.20"(114.3x88.9x55.9mm); Additional Information - Negative True Logic, Fuse Rating: 5A