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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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Part #

Terminal Block Tools & Accessories G4 16-Position Strap for Single Rack, Black (10-Pack)

G4STRAPB-BLACK
Opto 22
1: $163.74
1In Stock
New At Mouser

Mfr. Part #
G4STRAPB-BLACK

Mouser Part #
94-G4STRAPB-BLACK

New At Mouser

Opto 22

Terminal Block Tools & Accessories G4 16-Position Strap for Single Rack, Black (10-Pack)

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Datasheet

1In Stock

$163.74

$150.99

$148.24

$147.61

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Min.: 1
Mult.: 1

Fuse Clips G4 Fuse Retaining Clip 10 Pack

G4 FUSE CLIP
Opto 22
1: $43.31
1In Stock

Mfr. Part #
G4 FUSE CLIP

Mouser Part #
94-G4FUSECLIP

Opto 22

Fuse Clips G4 Fuse Retaining Clip 10 Pack

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Datasheet

1In Stock

$43.31

$43.14

$40.47

$39.17

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Min.: 1
Mult.: 1

I/O Modules G4 AC Input 90-140 VAC/VDC, 5 VDC Logic

G4IAC5
Opto 22
1: $50.58
76In Stock

Mfr. Part #
G4IAC5

Mouser Part #
94-G4IAC5

Opto 22

I/O Modules G4 AC Input 90-140 VAC/VDC, 5 VDC Logic

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Datasheet

76In Stock

$50.58

$47.00

$46.89

$46.76

$41.66

Min.: 1
Mult.: 1

I/O Modules G4 DC Input 10-32 VDC, 5 VDC Logic

G4IDC5
Opto 22
1: $50.05
175In Stock

Mfr. Part #
G4IDC5

Mouser Part #
94-G4IDC5

Opto 22

I/O Modules G4 DC Input 10-32 VDC, 5 VDC Logic

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Datasheet

175In Stock

$50.05

$46.79

$45.21

$44.90

$44.35

Min.: 1
Mult.: 1

I/O Modules G4 DC Input 2.5-28 VDC, 5 VDC Logic

G4IDC5D
Opto 22
1: $49.29
149In Stock

Mfr. Part #
G4IDC5D

Mouser Part #
94-G4IDC5D

Opto 22

I/O Modules G4 DC Input 2.5-28 VDC, 5 VDC Logic

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Datasheet

149In Stock

$49.29

$45.65

$45.24

$44.83

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Min.: 1
Mult.: 1

I/O Modules G4 AC Output 12-140 VAC, 24 VDC Logic

G4OAC24
Opto 22
1: $50.64
52In Stock

Mfr. Part #
G4OAC24

Mouser Part #
94-G4OAC24

Opto 22

I/O Modules G4 AC Output 12-140 VAC, 24 VDC Logic

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Datasheet

52In Stock

$50.64

$44.87

$39.76

Min.: 1
Mult.: 1

I/O Modules G4 AC Output 24-280 VAC, 24 VDC Logic

G4OAC24A
Opto 22
1: $49.01
126In Stock

Mfr. Part #
G4OAC24A

Mouser Part #
94-G4OAC24A

Opto 22

I/O Modules G4 AC Output 24-280 VAC, 24 VDC Logic

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Datasheet

126In Stock

$49.01

$46.24

$45.55

$45.35

$41.66

Min.: 1
Mult.: 1

I/O Modules G4 AC Output 12-140 VAC, 5 VDC Logic

G4OAC5
Opto 22
1: $50.34
98In Stock

Mfr. Part #
G4OAC5

Mouser Part #
94-G4OAC5

Opto 22

I/O Modules G4 AC Output 12-140 VAC, 5 VDC Logic

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Datasheet

98In Stock

$50.34

$45.83

$45.15

$44.53

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Min.: 1
Mult.: 1

I/O Modules G4 AC Output 24-280 VAC, 5 VDC Logic

G4OAC5A
Opto 22
1: $48.17
363In Stock

Mfr. Part #
G4OAC5A

Mouser Part #
94-G4OAC5A

Opto 22

I/O Modules G4 AC Output 24-280 VAC, 5 VDC Logic

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Datasheet

363In Stock

$48.17

$45.11

$43.26

$43.15

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Min.: 1
Mult.: 1

I/O Modules G4 DC Output 5-60 VDC, 24 VDC Logic

G4ODC24
Opto 22
1: $50.14
150In Stock

Mfr. Part #
G4ODC24

Mouser Part #
94-G4ODC24

Opto 22

I/O Modules G4 DC Output 5-60 VDC, 24 VDC Logic

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Datasheet

150In Stock

$50.14

$44.92

$43.93

$43.76

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Min.: 1
Mult.: 1

I/O Modules G4 DC Output 5-60 VDC, 5 VDC Logic

G4ODC5
Opto 22
1: $52.70
336In Stock

Mfr. Part #
G4ODC5

Mouser Part #
94-G4ODC5

Opto 22

I/O Modules G4 DC Output 5-60 VDC, 5 VDC Logic

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Datasheet

336In Stock

$52.70

$45.31

$45.15

$45.00

View

Min.: 1
Mult.: 1

I/O Modules G4 DC Output 5-200 VDC, 5 VDC Logic

G4ODC5A
Opto 22
1: $59.66
63In Stock

Mfr. Part #
G4ODC5A

Mouser Part #
94-G4ODC5A

Opto 22

I/O Modules G4 DC Output 5-200 VDC, 5 VDC Logic

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Datasheet

63In Stock

$59.66

$52.87

$46.84

Min.: 1
Mult.: 1

I/O Modules G4 Reed Relay Output, 5 VDC logic, normally open

G4ODC5R
Opto 22
1: $53.07
173In Stock
4On Order

Mfr. Part #
G4ODC5R

Mouser Part #
94-G4ODC5R

Opto 22

I/O Modules G4 Reed Relay Output, 5 VDC logic, normally open

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Datasheet

173In Stock

4On Order

$53.07

$47.01

$41.66

Min.: 1
Mult.: 1

Modules Accessories G4 16-channel I/O Module Rack with Terminal Strip

G4PB16T
Opto 22
1: $302.64
14In Stock

Mfr. Part #
G4PB16T

Mouser Part #
94-G4PB16T

Opto 22

Modules Accessories G4 16-channel I/O Module Rack with Terminal Strip

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Datasheet

14In Stock

$302.64

$283.54

Min.: 1
Mult.: 1

I/O Modules G4 AC Input 90-140 VAC/VDC, 24 VDC Logic

G4IAC24
Opto 22
1: $47.03
50In Stock
New At Mouser

Mfr. Part #
G4IAC24

Mouser Part #
94-G4IAC24

New At Mouser

Opto 22

I/O Modules G4 AC Input 90-140 VAC/VDC, 24 VDC Logic

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Datasheet

50In Stock

$47.03

$44.87

$41.63

$41.59

Min.: 1
Mult.: 1

Modules Accessories G4 16-channel I/O Module Rack

G4PB16
Opto 22
1: $296.56
11In Stock

Mfr. Part #
G4PB16

Mouser Part #
94-G4PB16

Opto 22

Modules Accessories G4 16-channel I/O Module Rack

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Datasheet

11In Stock

$296.56

$272.61

Min.: 1
Mult.: 1

Mounting Hardware G4 MODULE SOCKET 100-PACK

G4-MOD-SOCKETS
Opto 22
1: $91.81
10In Stock

Mfr. Part #
G4-MOD-SOCKETS

Mouser Part #
94-G4-MOD-SOCKETS

Opto 22

Mounting Hardware G4 MODULE SOCKET 100-PACK

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Datasheet

10In Stock

$91.81

$88.27

$87.22

$86.24

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Min.: 1
Mult.: 1

Fuse Clips G4 FUSE SOCKET 100-PACK

G4 FUSE SOCKETS
Opto 22
1: $95.12
1In Stock

Mfr. Part #
G4 FUSE SOCKETS

Mouser Part #
94-G4FUSESOCKETS

Opto 22

Fuse Clips G4 FUSE SOCKET 100-PACK

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Datasheet

1In Stock

$95.12

$89.45

$85.99

$84.06

View

Min.: 1
Mult.: 1

I/O Modules G4 AC Input 180-280 VAC/VDC, 5 VDC Logic

G4IAC5A
Opto 22
1: $53.07
9In Stock

Mfr. Part #
G4IAC5A

Mouser Part #
94-G4IAC5A

Opto 22

I/O Modules G4 AC Input 180-280 VAC/VDC, 5 VDC Logic

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Datasheet

9In Stock

$53.07

$46.98

$45.79

$44.87

$41.66

Min.: 1
Mult.: 1

I/O Modules G4 AC Input 90-140 VAC/VDC, 5 VDC Logic, Low Impedance

G4IAC5L
Opto 22
1: $53.77
5In Stock

Mfr. Part #
G4IAC5L

Mouser Part #
94-G4IAC5L

Opto 22

I/O Modules G4 AC Input 90-140 VAC/VDC, 5 VDC Logic, Low Impedance

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Datasheet

5In Stock

$53.77

$49.15

$48.64

$47.54

$43.56

Min.: 1
Mult.: 1

I/O Modules G4 DC Input 10-32 VDC, 24 VDC Logic

G4IDC24
Opto 22
1: $49.80
7In Stock
36Expected 2026-02-25

Mfr. Part #
G4IDC24

Mouser Part #
94-G4IDC24

Opto 22

I/O Modules G4 DC Input 10-32 VDC, 24 VDC Logic

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Datasheet

7In Stock

36Expected 2026-02-25

$49.80

$48.08

$46.35

$42.61

Min.: 1
Mult.: 1

I/O Modules G4 DC Input 2.5-16 VDC, 5 VDC Logic, Very High Speed

G4IDC5K
Opto 22
1: $48.07
5In Stock

Mfr. Part #
G4IDC5K

Mouser Part #
94-G4IDC5K

Opto 22

I/O Modules G4 DC Input 2.5-16 VDC, 5 VDC Logic, Very High Speed

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Datasheet

5In Stock

$48.07

$43.80

$43.79

$39.70

Min.: 1
Mult.: 1

I/O Modules G4 DC Output 5-60 VDC, 5 VDC Logic with Manual/Auto Switch

G4ODC5MA
Opto 22
1: $80.18
5In Stock

Mfr. Part #
G4ODC5MA

Mouser Part #
94-G4ODC5MA

Opto 22

I/O Modules G4 DC Output 5-60 VDC, 5 VDC Logic with Manual/Auto Switch

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Datasheet

5In Stock

$80.18

$79.25

$78.57

$74.59

$73.73

Min.: 1
Mult.: 1

I/O Modules G4 Reed Relay Output, 5 VDC logic, normally closed

G4ODC5R5
Opto 22
1: $79.55
25In Stock

Mfr. Part #
G4ODC5R5

Mouser Part #
94-G4ODC5R5

Opto 22

I/O Modules G4 Reed Relay Output, 5 VDC logic, normally closed

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Datasheet

25In Stock

$79.55

$75.18

$74.03

$66.62

Min.: 1
Mult.: 1

Modules Accessories G4 16-channel Mounting Rack with Header Connector

G4PB16H
Opto 22
1: $295.26
3In Stock

Mfr. Part #
G4PB16H

Mouser Part #
94-G4PB16H

Opto 22

Modules Accessories G4 16-channel Mounting Rack with Header Connector

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Datasheet

3In Stock

$295.26

$264.65

Min.: 1
Mult.: 1

G4 I/O Family

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