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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.
Fuse Clips G4 Fuse Retaining Clip 10 Pack G4 FUSE CLIP Opto 22 1: $46.71 1In Stock	Mfr. Part # G4 FUSE CLIP Mouser Part # 94-G4FUSECLIP	Opto 22	Fuse Clips G4 Fuse Retaining Clip 10 Pack Learn More about Opto 22 g4 io family	Datasheet	1In Stock	$46.71 $44.60 $40.78 $39.08 View $37.28 Quote	Min.: 1 Mult.: 1
I/O Modules G4 DC Output 5-60 VDC, 24 VDC Logic G4ODC24 Opto 22 1: $60.34 719In Stock	Mfr. Part # G4ODC24 Mouser Part # 94-G4ODC24	Opto 22	I/O Modules G4 DC Output 5-60 VDC, 24 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	719In Stock	$60.34 $52.42 $50.16 $48.53 View $46.92 $44.34 Quote	Min.: 1 Mult.: 1
I/O Modules G4 DC Output 5-60 VDC, 5 VDC Logic G4ODC5 Opto 22 1: $55.14 810In Stock	Mfr. Part # G4ODC5 Mouser Part # 94-G4ODC5	Opto 22	I/O Modules G4 DC Output 5-60 VDC, 5 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	810In Stock	$55.14 $49.91 $48.08 $46.43 View $44.29 $43.75	Min.: 1 Mult.: 1
I/O Modules G4 DC Input 10-32 VDC, 24 VDC Logic G4IDC24 Opto 22 1: $63.03 113In Stock	Mfr. Part # G4IDC24 Mouser Part # 94-G4IDC24	Opto 22	I/O Modules G4 DC Input 10-32 VDC, 24 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	113In Stock	$63.03 $54.76 $52.40 $50.72 View $49.02 $45.84 Quote	Min.: 1 Mult.: 1
I/O Modules G4 DC Input 10-32 VDC, 5 VDC Logic G4IDC5 Opto 22 1: $59.85 100In Stock	Mfr. Part # G4IDC5 Mouser Part # 94-G4IDC5	Opto 22	I/O Modules G4 DC Input 10-32 VDC, 5 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	100In Stock	$59.85 $52.42 $50.16 $48.53 View $46.92 $44.32	Min.: 1 Mult.: 1
I/O Modules G4 AC Output 24-280 VAC, 24 VDC Logic G4OAC24A Opto 22 1: $60.34 252In Stock	Mfr. Part # G4OAC24A Mouser Part # 94-G4OAC24A	Opto 22	I/O Modules G4 AC Output 24-280 VAC, 24 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	252In Stock	$60.34 $52.42 $50.16 $48.53 View $46.92 $44.32 Quote	Min.: 1 Mult.: 1
I/O Modules G4 AC Output 12-140 VAC, 5 VDC Logic G4OAC5 Opto 22 1: $60.34 59In Stock	Mfr. Part # G4OAC5 Mouser Part # 94-G4OAC5	Opto 22	I/O Modules G4 AC Output 12-140 VAC, 5 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	59In Stock	$60.34 $52.42 $50.16 $48.53 View $46.92 $45.14 Quote	Min.: 1 Mult.: 1
I/O Modules G4 AC Output 24-280 VAC, 5 VDC Logic G4OAC5A Opto 22 1: $60.34 85In Stock 748Expected 2026-11-27	Mfr. Part # G4OAC5A Mouser Part # 94-G4OAC5A	Opto 22	I/O Modules G4 AC Output 24-280 VAC, 5 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	85In Stock 748Expected 2026-11-27	$60.34 $53.24 $50.89 $49.20 View $46.92 $44.32 Quote	Min.: 1 Mult.: 1
I/O Modules G4 Reed Relay Output, 5 VDC logic, normally open G4ODC5R Opto 22 1: $63.66 202In Stock	Mfr. Part # G4ODC5R Mouser Part # 94-G4ODC5R	Opto 22	I/O Modules G4 Reed Relay Output, 5 VDC logic, normally open Learn More about Opto 22 g4 io family	Datasheet	202In Stock	$63.66 $56.69 $54.14 $52.27 View $50.47 $46.63 Quote	Min.: 1 Mult.: 1
I/O Modules G4 Reed Relay Output, 5 VDC logic, normally closed G4ODC5R5 Opto 22 1: $89.99 51In Stock	Mfr. Part # G4ODC5R5 Mouser Part # 94-G4ODC5R5	Opto 22	I/O Modules G4 Reed Relay Output, 5 VDC logic, normally closed Learn More about Opto 22 g4 io family	Datasheet	51In Stock	$89.99 $79.96 $76.90 $74.32 View $69.91 Quote	Min.: 1 Mult.: 1
Modules Accessories G4 16-channel I/O Module Rack with Terminal Strip G4PB16T Opto 22 1: $336.72 11In Stock	Mfr. Part # G4PB16T Mouser Part # 94-G4PB16T	Opto 22	Modules Accessories G4 16-channel I/O Module Rack with Terminal Strip Learn More about Opto 22 g4 io family	Datasheet	11In Stock	$336.72 $317.09 $305.60 $298.70	Min.: 1 Mult.: 1
Modules Accessories G4 16-channel I/O Module Rack G4PB16 Opto 22 1: $320.52 9In Stock	Mfr. Part # G4PB16 Mouser Part # 94-G4PB16	Opto 22	Modules Accessories G4 16-channel I/O Module Rack Learn More about Opto 22 g4 io family	Datasheet	9In Stock	$320.52 $285.83 $278.41 $275.59 View Quote	Min.: 1 Mult.: 1
I/O Modules G4 AC Input 180-280 VAC/VDC, 5 VDC Logic G4IAC5A Opto 22 1: $60.34 13In Stock	Mfr. Part # G4IAC5A Mouser Part # 94-G4IAC5A	Opto 22	I/O Modules G4 AC Input 180-280 VAC/VDC, 5 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	13In Stock	$60.34 $52.42 $50.16 $48.53 View $45.89 $43.88 Quote	Min.: 1 Mult.: 1
I/O Modules G4 AC Input 90-140 VAC/VDC, 5 VDC Logic, Low Impedance G4IAC5L Opto 22 1: $60.34 1In 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 Learn More about Opto 22 g4 io family	Datasheet	1In Stock	$60.34 $51.64 $49.68 $48.18 View $45.89 $43.89 Quote	Min.: 1 Mult.: 1
I/O Modules G4 DC Input - DC voltage, self-powered, normally open G4IDC5-SW Opto 22 1: $110.55 6In Stock	Mfr. Part # G4IDC5-SW Mouser Part # 94-G4IDC5-SW	Opto 22	I/O Modules G4 DC Input - DC voltage, self-powered, normally open Learn More about Opto 22 g4 io family	Datasheet	6In Stock	$110.55 $98.99 $94.25 $91.14 View $87.54 Quote	Min.: 1 Mult.: 1
I/O Modules G4 DC Input 4-16 VDC, 5VDC Logic High Speed G4IDC5B Opto 22 1: $59.85 10In Stock	Mfr. Part # G4IDC5B Mouser Part # 94-G4IDC5B	Opto 22	I/O Modules G4 DC Input 4-16 VDC, 5VDC Logic High Speed Learn More about Opto 22 g4 io family	Datasheet	10In Stock	$59.85 $52.42 $50.16 $48.53 View $46.92 $44.32	Min.: 1 Mult.: 1
I/O Modules G4 DC Input 2.5-28 VDC, 5 VDC Logic G4IDC5D Opto 22 1: $59.85 12In Stock	Mfr. Part # G4IDC5D Mouser Part # 94-G4IDC5D	Opto 22	I/O Modules G4 DC Input 2.5-28 VDC, 5 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	12In Stock	$59.85 $52.42 $50.16 $48.53 View $46.92 $44.32	Min.: 1 Mult.: 1
I/O Modules G4 DC Input 2.5-16 VDC, 5 VDC Logic, Very High Speed G4IDC5K Opto 22 1: $54.12 15In 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 Learn More about Opto 22 g4 io family	Datasheet	15In Stock	$54.12 $48.20 $46.02 $44.44 View $42.91 $40.97	Min.: 1 Mult.: 1
I/O Modules G4 AC Output 12-140 VAC, 24 VDC Logic G4OAC24 Opto 22 1: $56.17 4In Stock 17Expected 2026-10-26	Mfr. Part # G4OAC24 Mouser Part # 94-G4OAC24	Opto 22	I/O Modules G4 AC Output 12-140 VAC, 24 VDC Logic Learn More about Opto 22 g4 io family	Datasheet	4In Stock 17Expected 2026-10-26	$56.17 $50.03 $47.76 $46.12 View $44.54 $42.52	Min.: 1 Mult.: 1
Modules Accessories G4 16-channel Mounting Rack with Header Connector G4PB16H Opto 22 1: $322.13 4In Stock	Mfr. Part # G4PB16H Mouser Part # 94-G4PB16H	Opto 22	Modules Accessories G4 16-channel Mounting Rack with Header Connector Learn More about Opto 22 g4 io family	Datasheet	4In Stock	$322.13 $278.77 $274.91 Quote Quote	Min.: 1 Mult.: 1
Modules Accessories G4 16-channel I/O Module Rack Isolated Control G4PB16I Opto 22 1: $345.24 4In Stock	Mfr. Part # G4PB16I Mouser Part # 94-G4PB16I	Opto 22	Modules Accessories G4 16-channel I/O Module Rack Isolated Control Learn More about Opto 22 g4 io family	Datasheet	4In Stock	$345.24 $325.12 $313.33 $306.26	Min.: 1 Mult.: 1
Modules Accessories G4 Digital 4-Channel Mounting Rack G4PB4 Opto 22 1: $138.95 10In Stock	Mfr. Part # G4PB4 Mouser Part # 94-G4PB4	Opto 22	Modules Accessories G4 Digital 4-Channel Mounting Rack Learn More about Opto 22 g4 io family	Datasheet	10In Stock	$138.95 $125.78 $117.09 $113.85 View $106.75 Quote	Min.: 1 Mult.: 1
Modules Accessories G4 4-channel Output Module Rack G4PB4R Opto 22 1: $127.90 8In Stock	Mfr. Part # G4PB4R Mouser Part # 94-G4PB4R	Opto 22	Modules Accessories G4 4-channel Output Module Rack Learn More about Opto 22 g4 io family	Datasheet	8In Stock	$127.90 $115.65 $112.52 $109.74 View $101.16 Quote	Min.: 1 Mult.: 1
Modules Accessories G4 8-channel I/O Module Rack G4PB8 Opto 22 1: $181.96 5In Stock	Mfr. Part # G4PB8 Mouser Part # 94-G4PB8	Opto 22	Modules Accessories G4 8-channel I/O Module Rack Learn More about Opto 22 g4 io family	Datasheet	5In Stock	$181.96 $168.45 $162.56 $156.66 $153.13	Min.: 1 Mult.: 1
Terminal Block Tools & Accessories G4 16-Position Strap for Single Rack, Red (10-Pack) G4STRAPB Opto 22 1: $198.65 4In Stock 7Expected 2026-10-30	Mfr. Part # G4STRAPB Mouser Part # 94-G4STRAPB	Opto 22	Terminal Block Tools & Accessories G4 16-Position Strap for Single Rack, Red (10-Pack) Learn More about Opto 22 g4 io family	Datasheet	4In Stock 7Expected 2026-10-30	$198.65 $176.88 $168.87 $163.07	Min.: 1 Mult.: 1

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