Sinumerik I/O Module Pp 72/48D 2/2A Pn 72 I Digital 48O Digital, Dc 24 V, 0.25 A Analog 2 I: + /-10V, ,Sinumerik I/O Module Pp 72/48D 2/2A Pn 72 I Digital 48O Digital, Dc 24 V, 0.25 A Quantity: 2