Rockwell 1756-IB16D 12/24 V DC Sink ControlLogix Digital Input Module. Operating voltage 10 to 30V DC, 16 diagnostic inputs (4 points/group)
Rockwell 1756-OW16I I/O Module, ControlLogix, Digital Isolated Contact Output, 16 Channel, 0.25 Amp at 125 Volt DC, 2 Amp at 125/240 Volt AC