An industrial control system requires signals from the real world to be connected to IO modules capable of handling the type of various signals.

The G4 range of digital IO modules from Opto 22 are rack mount, single-channel devices, which provide direct connection to digital input and output process signals.

The G4 range of IO modules was the original Opto 22 single channel isolated IO series. A G4 digital IO interface module provides direct connection to 4-types of digital signals.

• AC Input – Single channel isolated module for monitoring VAC input
• AC Output – Single channel isolated module for switching VAC output
• DC Input - Single channel isolated module for monitoring VDC inputs
• DC Output - Single channel isolated module for switching VDC output