Opto 22 G4PB32H G4 32 Channel Rack with Header Connector for B4 Brain
The G4PB32H I/O mounting rack can accommodate up to 32 Generation 4 digital I/O modules. The G4PB32H has a connector to accept a PAMUX B4 Brain Board.
89/336/EEC, IEC 950: 1991-09, Underwriters Laboratory