SCHNEIDER ELECTRIC TSXDMF342A is TSX Compact series 34-point combined digital I/O expansion unit, 22 channels 24VDC input and 12 channels relay output, each relay 0.25A, 120/240VAC load. DIN rail mounting and IP20 rating, equipped with front channel LED indicators and screw terminals, connected to TSX Compact PLC via dedicated expansion bus. It reads sensor signals and drives field actuators, widely used for legacy TSX Compact automation system retrofit and maintenance for packaging and machine tool equipment.