Digital I/O and Relay Outputs

Assembly

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Isolated dry-contact relay outputs and logic-level digital inputs for alarm signaling and equipment control.

Direct parts	5
Total parts	11
Used in	1 assembly
Class	Assembly

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Isolated dry-contact relay outputs and logic-level digital inputs for alarm signaling and equipment control. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Digital I/O and Relay Outputs parts and their functions

5 top-level parts · 11 parts in total · full bill of materials below

Digital I/O and Relay Outputs parts diagram: 1 SPDT miniature relay, 2 GPIO expander IC, 3 DI surge protection, 4 indicator LED, 5 SMD passive (R/C/L). 11 parts in 5 top-level items. — Digital I/O and Relay Outputs parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	SPDT Miniature Relay	4×	SPDT miniature relay, 16A contacts, 24 VDC coil
2	GPIO Expander IC	1×	GPIO expander IC for 8 digital inputs
3	DI Surge Protection	1×	Surge protection diodes and filters on DI lines
4	Indicator LED	3×	Bicolor LED for power, LTE/5G status, and IP connectivity
5	SMD Passive (R/C/L)	2×	Relay snubber diodes, pull-up resistors

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Build & assembly graph

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Bill of materials for Digital I/O and Relay Outputs

5 top-level lines · 5 rows shown · 11 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	SPDT Miniature Relay	industrial-cellular-router-relay-module-x4	4×	4	·	part
2	GPIO Expander IC	industrial-cellular-router-dio-ic	1×	1	·	part
3	DI Surge Protection	industrial-cellular-router-input-protection	1×	1	·	part
4	Indicator LED	industrial-cellular-router-status-led-x3	3×	3	·	part
5	SMD Passive (R/C/L)	smd-passives	2×	2	·	part

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Where the digital I/O and relay outputs is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Networking & Telecom 1 Industrial Cellular Router

Used in 1 assembly

Industrial Cellular Router

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks