Digital G4 I/O Modules
About Digital G4 I/O Modules
Introduced in 1990, G4 I/O offered a more compact footprint than the earlier G1 and added an LED status indicator on the top of the module. Thousands of customers continue to rely on G4 discrete and analog I/O in their legacy Optomux and mistic systems. G4 discrete I/O can switch up to 3 A per channel. Each module is individually fused. Wiring terminals on the rack are easy to use.
AC Input
G4IAC24

The G4IAC24 is a digital AC input module with an input voltage range of 90-140 VAC/VDC, requiring a typical logic voltage of 24 VDC. It is not for use with Opto 22 brains or with a Raspberry Pi, which use 5 VDC logic.
G4 AC Input 90-140 VAC/VDC, 24 VDC Logic
G4IAC24A
The G4IAC24A is a digital AC input module with an input voltage range of 90-140 VAC/VDC, requiring a typical logic voltage of 15 VDC. It is not for use with Opto 22 brains or with a Raspberry Pi, which use 5 VDC logic.
G4 AC Input 190-280 VAC/VDC, 24 VDC Logic
G4IAC5
The G4IAC5 is a digital AC input module with an input voltage range of 90-140 VAC/VDC, requiring a typical logic voltage of 5 VDC. This module is compatible with Opto 22 brains and with a Raspberry Pi.
SNAP 4-Ch Isolated 12-250 VAC Digital (Discrete) Output Module
G4IAC5A
The G4IAC5A is a digital AC input module with an input voltage range of 180-280 VAC/VDC, requiring a typical logic voltage of 5 VDC. This module is compatible with Opto 22 brains and with a Raspberry Pi.
G4 AC Input 180-280 VAC/VDC, 5 VDC Logic
G4IAC5MA
The G4IAC5 is a digital AC input module with an input voltage range of 90-140 VAC/VDC, requiring a typical logic voltage of 5 VDC. The G4IAC5MA features a manual-on/manual-off/automatic switch, ideal for diagnostic testing of control applications.This module is compatible with Opto 22 brains and with a Raspberry Pi.
G4 AC Input 90-140 VAC/VDC, 5VDC Logic, with Manual/Auto Switch
G4IAC5L
The G4IAC5L is a digital AC input module with an input voltage range of 90-140 VAC/VDC, requiring a typical logic voltage of 5 VDC. This module is compatible with Opto 22 brains and with a Raspberry Pi.
G4 AC Input 90-140 VAC/VDC, 5 VDC Logic, Low Impedance
AC Output
G4OAC15
The G4OAC15 is a digital AC output module with an output voltage range of 12–140, requiring a typical logic voltage of 15 VDC. It is not for use with Opto 22 brains or with a Raspberry Pi, which use 5 VDC logic.
G4 AC Output 12-140 VAC, 15 VDC Logic
G4OAC15A
The G4OAC15A is a digital AC output module with an output voltage range of 24-280 VAC, requiring a typical logic voltage of 15 VDC. It is not for use with Opto 22 brains or with a Raspberry Pi, which use 5 VDC logic.
G4 AC Output 24-280 VAC, 15 VDC Logic
G4OAC24
The G4OAC24 is a digital AC output module with an output voltage range of 12–140 VAC, requiring a typical logic voltage of 24 VDC. It is not for use with Opto 22 brains or with a Raspberry Pi, which use 5 VDC logic.
G4 AC Output 12-140 VAC, 24 VDC Logic
G4OAC24A
The G4OAC24A is a digital AC output module with an output voltage range of 24-280 VAC, requiring a typical logic voltage of 24 VDC. It is not for use with Opto 22 brains or with a Raspberry Pi, which use 5 VDC logic.
G4 AC Output 24-280 VAC, 24 VDC Logic
G4OAC5
The G4OAC5 is a digital AC output module with an output voltage range of 12–140 VAC, requiring a typical logic voltage of 5 VDC. It is compatible with Opto 22 brains and Raspberry Pi.
G4 AC Output 12-140 VAC, 5 VDC Logic
G4OAC5A
The G4OAC5A is a digital AC output module with an output voltage range of 24-280 VAC, requiring a typical logic voltage of 5 VDC. It is compatible with Opto 22 brains and Raspberry Pi.
G4 AC Output 24-280 VAC, 5 VDC Logic
G4OAC5AMA
The G4OAC5AMA is a digital AC output module with an output voltage range of 24-280 VAC, requiring a typical logic voltage of 5 VDC. It is compatible with Opto 22 brains and Raspberry Pi.
G4 AC Output 24-280 VAC, 5 VDC Logic, with manual/auto switch
G4OAC5A5
The G4OAC5A5 is a digital AC output module with an output voltage range of 24-280 VAC, requiring a typical logic voltage of 5 VDC. It is compatible with Opto 22 brains and Raspberry Pi.
G4 AC Output, 24-280 VAC, 5 VDC Logic, Normally Closed
G4OAC5MA
The G4OAC5MA is a digital AC output module with an output voltage range of 12–140 VAC, requiring a typical logic voltage of 5 VDC. It is compatible with Opto 22 brains and Raspberry Pi.
G4 AC Output 12-140 VAC, 5 VDC Logic with Manual/Auto Switch
DC Input
G4IDC24
The G4IDC24 is a digital DC input module with an input voltage range of 10-32 VDC (or 12-32 VAC), requiring a typical logic voltage of 24 VDC. This module is not compatible with Opto 22 brains.
G4 DC Input 10-32 VDC, 24 VDC Logic
G4IDC5
The G4IDC5 is a digital DC input module with an input voltage range of 10-32 VDC (or 12-32 VAC), requiring a typical logic voltage of 5 VDC. This module is compatible with Opto 22 brains and with a Raspberry Pi.
G4 DC Input 10-32 VDC, 5 VDC Logic
G4IDC5B
The G4IDC5B is a digital DC input module with an input voltage range of 4-16 VDC/VAC, requiring a typical logic voltage of 5 VDC. This module is compatible with Opto 22 brains.
G4 DC Input 4-16 VDC, 5VDC Logic High Speed
G4IDC5D
The G4IDC5D is a digital DC input module with an input voltage range of 2.5 to 28 VDC, requiring a typical logic voltage of 5 VDC. This module is compatible with Opto 22 brains and with a Raspberry Pi.
G4 DC Input 2.5-28 VDC, 5 VDC Logic
G4IDC5K
The G4IDC5K is a fast-switching module used to detect signals produced by photoelectric switches and TTL devices. This digital DC input module has an input voltage range of 2.5 to 16 VDC, requiring a typical logic voltage of 5 VDC. This module is compatible with Opto 22 brains.
G4 DC Input 2.5-16 VDC, 5 VDC Logic, Very High Speed
G4IDC5MA
The G4IDC5MA is a digital DC input module with an input voltage range of 10-32 VDC (or 12-32 VAC), requiring a typical logic voltage of 5 VDC. This module is compatible with Opto 22 brains and with a Raspberry Pi.
G4 DC Input 10-32 VDC, 5 VDC Logic with Manual/Auto Switch
DC Output
G4ODC15
The G4ODC15 is a digital DC output module with an output voltage range of 5-60 VDC, requiring a typical logic voltage of 15 VDC. It is not for use with Opto 22 brains or with a Raspberry Pi, which use 5 VDC logic.
G4 DC Output 5-60 VDC, 15 VDC Logic
G4ODC24
The G4ODC24 is a digital DC output module with an output voltage range of 5-60 VDC, requiring a typical logic voltage of 24 VDC. It is not for use with Opto 22 brains or with a Raspberry Pi, which use 5 VDC logic.
G4 DC Output 5-60 VDC, 24 VDC Logic
G4ODC24A
The G4ODC24A is a digital DC output module with an output voltage range of 5-200 VDC, requiring a typical logic voltage of 24 VDC. It is not for use with Opto 22 brains or with a Raspberry Pi, which use 5 VDC logic.
G4 DC Output 5-200 VDC, 24 VDC Logic
G4ODC5
The G4ODC5 is a digital DC output module with an output voltage range of 5-60 VDC, requiring a typical logic voltage of 5 VDC. It is compatible with Opto 22 brains and with a Raspberry Pi.
G4 DC Output 5-60 VDC, 5 VDC Logic
G4ODC5A
The G4ODC5A is a digital DC output module with an output voltage range of 5-200 VDC, requiring a typical logic voltage of 5 VDC. It is compatible with Opto 22 brains and with a Raspberry Pi.
G4 DC Output 5-200 VDC, 5 VDC Logic
G4ODC5MA
The G4ODC5MA is a digital DC output module with an output voltage range of 5-60 VDC, requiring a typical logic voltage of 5 VDC. It is compatible with Opto 22 brains and with a Raspberry Pi.
G4 DC Output 5-60 VDC, 5 VDC Logic with Manual/Auto Switch
Dry Contact
G4IDC5-SW
The G4IDC5-SW module provides one isolated channel of contact status input, sensing switch closure. The module supplies 15 volts of power to an external dry contact switch.