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G4 I/O Family

Opto 22 G4 I/O Family offers I/O modules with an LED status indicator on the top of the module and a more compact footprint than the previous G1 I/O modules. The G4 product lineup includes not only discrete and analog I/O modules but also controllers, battery packs, fuse clips, tools, and accessories. The discrete I/O modules can switch up to 3A per channel, and each module is individually fused. The analog I/O modules provide complete electrical channel-to-channel isolation, which eliminates troublesome ground loop problems. The Opto 22 G4 products are guaranteed for life and are suitable for new installations, legacy Optomux and mistic systems, Raspberry Pi, and more.

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Select Image Part # Mfr. Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity. Qty. RoHS
Opto 22 Fuse Clips G4 Fuse Retaining Clip 10 Pack 1In Stock
$32.45
$30.97
$28.33
$27.14
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 DC Output 5-60 VDC, 24 VDC Logic 719In Stock
$41.90
$36.40
$34.83
$33.70
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 DC Output 5-60 VDC, 5 VDC Logic 810In Stock
$38.30
$34.67
$33.40
$32.25
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 DC Input 10-32 VDC, 24 VDC Logic 113In Stock
$43.78
$38.04
$36.40
$35.23
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 DC Input 10-32 VDC, 5 VDC Logic 100In Stock
$41.57
$36.40
$34.83
$33.70
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 AC Output 24-280 VAC, 24 VDC Logic 252In Stock
$41.90
$36.40
$34.83
$33.70
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 AC Output 12-140 VAC, 5 VDC Logic 59In Stock
$41.90
$36.40
$34.83
$33.70
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 Reed Relay Output, 5 VDC logic, normally open 202In Stock
$44.22
$39.38
$37.61
$36.31
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 Reed Relay Output, 5 VDC logic, normally closed 51In Stock
$62.50
$55.54
$53.40
$51.61
Min.: 1
Mult.: 1
Opto 22 Modules Accessories G4 16-channel I/O Module Rack with Terminal Strip 11In Stock
$233.87
$220.24
$212.26
$207.47
Min.: 1
Mult.: 1
Opto 22 Modules Accessories G4 16-channel I/O Module Rack 9In Stock
$222.62
$198.52
$193.37
$191.42
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 AC Input 180-280 VAC/VDC, 5 VDC Logic 13In Stock
$41.90
$36.40
$34.83
$33.70
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 AC Input 90-140 VAC/VDC, 5 VDC Logic, Low Impedance 1In Stock
$41.90
$35.87
$34.51
$33.47
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 DC Input - DC voltage, self-powered, normally open 6In Stock
$76.78
$68.76
$65.47
$63.30
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 DC Input 4-16 VDC, 5VDC Logic High Speed 10In Stock
$41.57
$36.40
$34.83
$33.70
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 DC Input 2.5-28 VDC, 5 VDC Logic 12In Stock
$41.57
$36.40
$34.83
$33.70
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 DC Input 2.5-16 VDC, 5 VDC Logic, Very High Speed 15In Stock
$37.59
$33.47
$31.97
$30.87
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 AC Output 12-140 VAC, 24 VDC Logic 4In Stock
$39.02
$34.75
$33.18
$32.04
Min.: 1
Mult.: 1
Opto 22 I/O Modules G4 AC Output 24-280 VAC, 5 VDC Logic 20In Stock
813Expected 2026/11/27
$41.90
$36.97
$35.34
$34.18
Min.: 1
Mult.: 1
Opto 22 Modules Accessories G4 16-channel Mounting Rack with Header Connector 4In Stock
$223.74
$193.63
$191.14
Min.: 1
Mult.: 1
Opto 22 Modules Accessories G4 16-channel I/O Module Rack Isolated Control 4In Stock
$239.80
$225.82
$217.63
$212.71
Min.: 1
Mult.: 1
Opto 22 Modules Accessories G4 Digital 4-Channel Mounting Rack 10In Stock
$96.51
$87.36
$81.33
$79.07
Min.: 1
Mult.: 1
Opto 22 Modules Accessories G4 4-channel Output Module Rack 8In Stock
$88.84
$80.33
$78.15
$76.22
Min.: 1
Mult.: 1
Opto 22 Modules Accessories G4 8-channel I/O Module Rack 5In Stock
$126.38
$117.00
$112.92
$108.81
$106.36
Min.: 1
Mult.: 1
Opto 22 Terminal Block Tools & Accessories G4 16-Position Strap for Single Rack, Red (10-Pack) 4In Stock
7Expected 2026/10/30
$137.98
$122.85
$117.29
$113.26
Min.: 1
Mult.: 1