Opto 22

G4 Series Discrete and Analog I/O Relay Modules

Opto 22 I/O relay modules are designed for use in legacy and other systems

Image of Opto 22 G4 Series Discrete and Analog I/O Relay ModulesThe Opto 22 G4 I/O was introduced in 1990, offering a more compact footprint than the earlier G1 and adding an LED status indicator on the top of the module. Many customers continue to rely on the G4 discrete and analog I/O in their legacy Optomux and Mystic systems. The G4 I/O is not just for legacy systems; many other installations use it as well.

Features
  • G4 analog I/O:
    • Provides complete electrical channel-to-channel isolation
    • Isolation eliminates troublesome ground loop problems
    • Wide variety of signal inputs includes RTD, ICTD, voltage, current, thermocouple, and TPO
 
  • G4 discrete I/O:
    • Ability to switch up to 3 A per channel
    • Each module is individually fused
    • Wiring terminals on the rack are easy to use

G4 Series Discrete and Analog I/O Relay Modules

ImageManufacturer Part NumberDescriptionTypeColorAvailable QuantityPriceView Details
G4 DC INPUT 2.5-28 VDC, 5 VDC LOG4IDC5DG4 DC INPUT 2.5-28 VDC, 5 VDC LODC Input ModuleWhite10 - Immediate$58.69View Details
G4 AC OUTPUT 24-280 VAC, 5 VDC LG4OAC5AG4 AC OUTPUT 24-280 VAC, 5 VDC LAC Output ModuleBlack5 - Immediate$60.13View Details
G4 AC INPUT 90-140 VAC/VDC, 24 VG4IAC24G4 AC INPUT 90-140 VAC/VDC, 24 VAC Input ModuleYellow10 - Immediate$60.13View Details
G4 DC OUTPUT 5-60 VDC, 5 VDC LOGG4ODC5G4 DC OUTPUT 5-60 VDC, 5 VDC LOGDC Output ModuleRed4 - Immediate$61.58View Details
G4 REED RELAY OUTPUT, 5 VDC LOGIG4ODC5RG4 REED RELAY OUTPUT, 5 VDC LOGIDC Output ModuleRed10 - Immediate$63.02View Details
G4 AC OUTPUT 24-280 VAC, 24 VDCG4OAC24AG4 AC OUTPUT 24-280 VAC, 24 VDCAC Output ModuleBlack10 - Immediate$63.02View Details
G4 AC INPUT 90-140 VAC/VDC, 5 VDG4IAC5G4 AC INPUT 90-140 VAC/VDC, 5 VDAC Input ModuleYellow6 - Immediate$63.02View Details
G4 AC OUTPUT 12-140 VAC, 5 VDC LG4OAC5G4 AC OUTPUT 12-140 VAC, 5 VDC LAC Output ModuleBlack4 - Immediate$63.02View Details
G4 DC INPUT 10-32 VDC, 24 VDC LOG4IDC24G4 DC INPUT 10-32 VDC, 24 VDC LODC Input ModuleWhite10 - Immediate$64.43View Details
G4 AC OUTPUT 24-280 VAC, 5 VDC LG4OAC5AMAG4 AC OUTPUT 24-280 VAC, 5 VDC LAC Output ModuleBlack5 - Immediate$106.19View Details
G4 AC OUTPUT 12-140 VAC, 5 VDC LG4OAC5MAG4 AC OUTPUT 12-140 VAC, 5 VDC LAC Output ModuleBlack6 - Immediate$115.69View Details
G4 DC INPUT 2.5-16 VDC, 5 VDC LOG4IDC5KG4 DC INPUT 2.5-16 VDC, 5 VDC LODC Input ModuleWhite1 - Immediate$58.69View Details
G4 AC OUTPUT 12-140 VAC, 15 VDCG4OAC15G4 AC OUTPUT 12-140 VAC, 15 VDCAC Output ModuleBlack1 - Immediate$60.13View Details
G4 AC OUTPUT 12-140 VAC, 24 VDCG4OAC24G4 AC OUTPUT 12-140 VAC, 24 VDCAC Output ModuleBlack0 - Immediate$60.13View Details
G4 DC INPUT 10-32 VDC, 5 VDC LOGG4IDC5G4 DC INPUT 10-32 VDC, 5 VDC LOGDC Input ModuleWhite0 - Immediate$61.10View Details
G4 DC OUTPUT 5-60 VDC, 24 VDC LOG4ODC24G4 DC OUTPUT 5-60 VDC, 24 VDC LODC Output ModuleRed4 - Immediate$61.58View Details
G4 AC INPUT 180-280 VAC/VDC, 5 VG4IAC5AG4 AC INPUT 180-280 VAC/VDC, 5 VAC Input ModuleYellow5 - Immediate$63.02View Details
G4 DC OUTPUT 5-60 VDC, 15 VDC LOG4ODC15G4 DC OUTPUT 5-60 VDC, 15 VDC LODC Output ModuleRed1 - Immediate$63.02View Details
G4 AC INPUT 90-140 VAC/VDC, 5 VDG4IAC5LG4 AC INPUT 90-140 VAC/VDC, 5 VDAC Input ModuleYellow5 - Immediate$65.87View Details
G4 DC OUTPUT 5-200 VDC, 5 VDC LOG4ODC5AG4 DC OUTPUT 5-200 VDC, 5 VDC LODC Output ModuleWhite1 - Immediate$70.84View Details
Published: 2025-10-27