I/O Module, Digital Input, 120 Volt AC, 32 ChannelOur Bulletin 1756 ControlLogix® chassis-based modules provide a full range of digital, diagnostic digital, analog, motion control, specialty & I/O, and compute modules to meet your application needs. You can use any of the chassis-based modules in the local chassis of a ControlLogix controller or in a chassis linked to a ControlLogix controller across ControlNet™ or EtherNet/IP™ networks.