I/O expansion unit, 8 x 24 VDC inputs

I/O expansion unit, 8 x relay outputs 2 A

I/O expansion unit, 4 x analog inputs 1 to 5 V, 0 to 5 V, 0 to 10 V, -10 to 10 V, 0 to 20 mA, 4 to 20 mA, resolution 1:6000

I/O expansion unit, 4 x analog inputs 0 to 5 V, 1 to 5 V, 0 to 10 V, -10 to 10 V, 0 to 20 mA, 4 to 20 mA

CP1 RS-232C (15 m max.) serial communication option board

CP1 RS422/485 (50 m max.) serial communication option board