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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 #

Fuse Clips G4 FUSE SOCKET 100-PACK

G4 FUSE SOCKETS
Opto 22
1: 53.66 CHF
1In Stock

Mfr. Part No.
G4 FUSE SOCKETS

Mouser Part No
94-G4FUSESOCKETS

Opto 22

Fuse Clips G4 FUSE SOCKET 100-PACK

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Datasheet

1In Stock

53.66 CHF

50.65 CHF

48.57 CHF

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Min.: 1
Mult.: 1

Fuse Clips G4 Fuse Retaining Clip 10 Pack

G4 FUSE CLIP
Opto 22
1: 22.16 CHF
1In Stock

Mfr. Part No.
G4 FUSE CLIP

Mouser Part No
94-G4FUSECLIP

Opto 22

Fuse Clips G4 Fuse Retaining Clip 10 Pack

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Datasheet

1In Stock

22.16 CHF

21.46 CHF

20.63 CHF

19.85 CHF

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Min.: 1
Mult.: 1

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

G4STRAPB-BLACK
Opto 22
1: 83.76 CHF
1In Stock

Mfr. Part No.
G4STRAPB-BLACK

Mouser Part No
94-G4STRAPB-BLACK

Opto 22

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

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Datasheet

1In Stock

83.76 CHF

83.39 CHF

80.74 CHF

78.36 CHF

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Min.: 1
Mult.: 1

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

G4OAC5A
Opto 22
1: 29.21 CHF
555In Stock Restricted Availability

Mfr. Part No.
G4OAC5A

Mouser Part No
94-G4OAC5A

Opto 22

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

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Datasheet

555In Stock

29.21 CHF

26.06 CHF

25.39 CHF

24.38 CHF

22.54 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4IDC24
Opto 22
1: 29.79 CHF
102In Stock Restricted Availability

Mfr. Part No.
G4IDC24

Mouser Part No
94-G4IDC24

Opto 22

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

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Datasheet

102In Stock

29.79 CHF

27.29 CHF

23.53 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4IDC5
Opto 22
1: 27.55 CHF
145In Stock Restricted Availability

Mfr. Part No.
G4IDC5

Mouser Part No
94-G4IDC5

Opto 22

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

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Datasheet

145In Stock

27.55 CHF

25.55 CHF

24.84 CHF

24.53 CHF

23.76 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4OAC5
Opto 22
1: 27.33 CHF
89In Stock Restricted Availability

Mfr. Part No.
G4OAC5

Mouser Part No
94-G4OAC5

Opto 22

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

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Datasheet

89In Stock

27.33 CHF

25.13 CHF

24.53 CHF

24.19 CHF

22.54 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4ODC24
Opto 22
1: 29.17 CHF
1 044In Stock Restricted Availability

Mfr. Part No.
G4ODC24

Mouser Part No
94-G4ODC24

Opto 22

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

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Datasheet

1 044In Stock

29.17 CHF

25.18 CHF

24.59 CHF

22.54 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4ODC5
Opto 22
1: 29.17 CHF
350In Stock Restricted Availability

Mfr. Part No.
G4ODC5

Mouser Part No
94-G4ODC5

Opto 22

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

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Datasheet

350In Stock

29.17 CHF

25.97 CHF

25.48 CHF

24.37 CHF

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Mult.: 1

Restricted Availability

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

G4ODC5R
Opto 22
1: 30.79 CHF
220In Stock Restricted Availability

Mfr. Part No.
G4ODC5R

Mouser Part No
94-G4ODC5R

Opto 22

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

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Datasheet

220In Stock

30.79 CHF

27.49 CHF

26.69 CHF

25.42 CHF

23.53 CHF

Min.: 1
Mult.: 1

Restricted Availability

Modules Accessories G4 16-channel I/O Module Rack

G4PB16
Opto 22
1: 162.66 CHF
10In Stock Restricted Availability

Mfr. Part No.
G4PB16

Mouser Part No
94-G4PB16

Opto 22

Modules Accessories G4 16-channel I/O Module Rack

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Datasheet

10In Stock

162.66 CHF

148.34 CHF

146.78 CHF

145.61 CHF

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Min.: 1
Mult.: 1

Restricted Availability

Mounting Fixings G4 MODULE SOCKET 100-PACK

G4-MOD-SOCKETS
Opto 22
1: 48.68 CHF
2In Stock

Mfr. Part No.
G4-MOD-SOCKETS

Mouser Part No
94-G4-MOD-SOCKETS

Opto 22

Mounting Fixings G4 MODULE SOCKET 100-PACK

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Datasheet

2In Stock

48.68 CHF

48.45 CHF

46.98 CHF

45.57 CHF

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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: 29.10 CHF
15In Stock Restricted Availability
29Expected 20/08/2026

Mfr. Part No.
G4IAC5

Mouser Part No
94-G4IAC5

Opto 22

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

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Datasheet

15In Stock

29Expected 20/08/2026

29.10 CHF

25.36 CHF

24.97 CHF

24.44 CHF

21.65 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4IAC5L
Opto 22
1: 29.14 CHF
1In Stock Restricted Availability

Mfr. Part No.
G4IAC5L

Mouser Part No
94-G4IAC5L

Opto 22

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

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Datasheet

1In Stock

29.14 CHF

25.80 CHF

25.35 CHF

24.85 CHF

22.54 CHF

Min.: 1
Mult.: 1

Restricted Availability

I/O Modules G4 DC Input - DC voltage, self-powered, normally open

G4IDC5-SW
Opto 22
1: 56.14 CHF
6In Stock Restricted Availability

Mfr. Part No.
G4IDC5-SW

Mouser Part No
94-G4IDC5-SW

Opto 22

I/O Modules G4 DC Input - DC voltage, self-powered, normally open

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Datasheet

6In Stock

56.14 CHF

51.19 CHF

50.65 CHF

50.53 CHF

45.35 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4IDC5D
Opto 22
1: 27.94 CHF
15In Stock Restricted Availability

Mfr. Part No.
G4IDC5D

Mouser Part No
94-G4IDC5D

Opto 22

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

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Datasheet

15In Stock

27.94 CHF

25.28 CHF

24.16 CHF

22.54 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4IDC5K
Opto 22
1: 26.48 CHF
15In Stock Restricted Availability

Mfr. Part No.
G4IDC5K

Mouser Part No
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

15In Stock

26.48 CHF

23.62 CHF

23.61 CHF

21.65 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4OAC24
Opto 22
1: 30.85 CHF
14In Stock Restricted Availability

Mfr. Part No.
G4OAC24

Mouser Part No
94-G4OAC24

Opto 22

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

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Datasheet

14In Stock

30.85 CHF

26.53 CHF

26.52 CHF

22.54 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4ODC5R5
Opto 22
1: 42.42 CHF
19In Stock Restricted Availability
32Expected 20/08/2026

Mfr. Part No.
G4ODC5R5

Mouser Part No
94-G4ODC5R5

Opto 22

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

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Datasheet

19In Stock

32Expected 20/08/2026

42.42 CHF

40.25 CHF

39.23 CHF

38.68 CHF

34.56 CHF

Min.: 1
Mult.: 1

Restricted Availability

Modules Accessories G4 16-channel Mounting Rack with Header Connector

G4PB16H
Opto 22
1: 160.95 CHF
4In Stock Restricted Availability

Mfr. Part No.
G4PB16H

Mouser Part No
94-G4PB16H

Opto 22

Modules Accessories G4 16-channel Mounting Rack with Header Connector

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Datasheet

4In Stock

160.95 CHF

144.31 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4PB16T
Opto 22
1: 175.62 CHF
4In Stock Restricted Availability

Mfr. Part No.
G4PB16T

Mouser Part No
94-G4PB16T

Opto 22

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

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Datasheet

4In Stock

175.62 CHF

160.09 CHF

Min.: 1
Mult.: 1

Restricted Availability

Modules Accessories G4 Digital 4-Channel Mounting Rack

G4PB4
Opto 22
1: 67.41 CHF
14In Stock Restricted Availability

Mfr. Part No.
G4PB4

Mouser Part No
94-G4PB4

Opto 22

Modules Accessories G4 Digital 4-Channel Mounting Rack

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Datasheet

14In Stock

67.41 CHF

60.74 CHF

59.90 CHF

59.21 CHF

53.61 CHF

Min.: 1
Mult.: 1

Restricted Availability

Modules Accessories G4 4-channel Output Module Rack

G4PB4R
Opto 22
1: 63.96 CHF
8In Stock Restricted Availability

Mfr. Part No.
G4PB4R

Mouser Part No
94-G4PB4R

Opto 22

Modules Accessories G4 4-channel Output Module Rack

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Datasheet

8In Stock

63.96 CHF

59.08 CHF

57.64 CHF

52.57 CHF

Min.: 1
Mult.: 1

Restricted Availability

Modules Accessories G4 8-channel I/O Module Rack

G4PB8
Opto 22
1: 87.91 CHF
1In Stock Restricted Availability

Mfr. Part No.
G4PB8

Mouser Part No
94-G4PB8

Opto 22

Modules Accessories G4 8-channel I/O Module Rack

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Datasheet

1In Stock

87.91 CHF

83.20 CHF

83.16 CHF

83.07 CHF

78.86 CHF

Min.: 1
Mult.: 1

Restricted Availability

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

G4STRAPB
Opto 22
1: 98.70 CHF
6In Stock

Mfr. Part No.
G4STRAPB

Mouser Part No
94-G4STRAPB

Opto 22

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

Learn More

Datasheet

6In Stock

98.70 CHF

83.90 CHF

83.57 CHF

76.28 CHF

Min.: 1
Mult.: 1

G4 I/O Family

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