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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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
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Opto 22 Modules Accessories G4 Digital 4-Channel Mounting Rack
Datasheet
18In Stock
Min.: 1
Mult.: 1

Opto 22 Modules Accessories G4 4-channel Output Module Rack
Datasheet
1In Stock
9Expected 2/20/2026
Min.: 1
Mult.: 1

Opto 22 Modules Accessories G4 8-channel I/O Module Rack
Datasheet
5In Stock
Min.: 1
Mult.: 1

Opto 22 Terminal Block Tools & Accessories G4 16-Position Strap for Single Rack, Red (10-Pack)
Datasheet
5In Stock
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 AC Input 90-140 VAC/VDC, 5VDC Logic, with Manual/Auto Switch
Datasheet
13In Stock
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 DC Input 4-16 VDC, 5VDC Logic High Speed
Datasheet
18In Stock
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 AC Output 12-140 VAC, 15 VDC Logic
Datasheet
10In Stock
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 AC Output, 24-280 VAC, 5 VDC Logic, Normally Closed
Datasheet
2In Stock
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 AC Output 12-140 VAC, 5 VDC Logic with Manual/Auto Switch
Datasheet
4In Stock
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 DC Output 5-60 VDC, 15 VDC Logic
Datasheet
6In Stock
Min.: 1
Mult.: 1

Opto 22 Modules Accessories G4 16-channel I/O Module Rack Isolated Control
Datasheet
3In Stock
Min.: 1
Mult.: 1

Opto 22 Modules Accessories G4 24-channel I/O Module Rack
Datasheet
5In Stock
Min.: 1
Mult.: 1

Opto 22 G4-PEM-NUTS
Opto 22 Mounting Fixings G4 PEM NUTS 100-PACK
Datasheet
5In Stock
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 DC Input - DC voltage, self-powered, normally open
Datasheet
Non-Stocked Lead-Time 1 Week
Min.: 1
Mult.: 1

Opto 22 Modules Accessories G4 8-channel Mounting Rack with Header Connector
Datasheet
Non-Stocked Lead-Time 2 Weeks
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 Digital Input Switch, 5, 15, 24 VDC Logic
Datasheet
Non-Stocked Lead-Time 6 Weeks
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 100 Ohm Platinum RTD Analog Input
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 4 to 20 mA Analog Input
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 Type K Thermocouple Analog Input
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 4-20 mA Analog Output
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

Opto 22 Ethernet Development Tools Ethernet I/O Upgrade for B4 Brain
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 AC Input 190-280 VAC/VDC, 24 VDC Logic
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 DC Input 10-32 VDC, 5 VDC Logic with Manual/Auto Switch
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 AC Output 24-280 VAC, 15 VDC Logic
Datasheet
Non-Stocked
Min.: 1
Mult.: 1

Opto 22 I/O Modules G4 AC Output 24-280 VAC, 5 VDC Logic, with manual/auto switch
Datasheet
Non-Stocked
Min.: 1
Mult.: 1