PLC Mounting Boards: Type - I/O Module Mounting Rack; Use With - G4 Digital I/O Modules; Module Capacity - 24; Communication - 50 Pin Header Connector; Interface Connection - Field: Screw Terminal Strip (#10 AWG Max); Voltage - 5VDC, 15VDC & 24VDC; Dimensions - 7.50 x 6.25"(190.5x158.8mm); Operating Temperature - 0 to 70 deg C (32 to 158 deg F)