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3-Ch Relay Expansion Board Optocoupler Isolation Relay Module with GPIO Control High Voltage Surge Protection Switching Board for AC/DC Loads Industrial Control Smart Home and AIoT
- 3-channel relay expansion board provides three relay channels for controlling external electrical loads.
- Optocoupler isolation separates the low-voltage GPIO control signal from the high-voltage load circuit.
- High-voltage surge and electromagnetic interference protection helps shield the connected mainboard.
- GPIO control enables switching external electrical loads on or off through the relay board.
- Supports switching AC and DC devices, including lights, solenoid valves, and other electrical equipment.
- Compact layout saves installation space and simplifies wiring for industrial control, smart control, equipment monitoring, and AIoT projects.
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Product Description:
3-channel relay expansion board designed for GPIO-controlled switching in industrial control, smart home, equipment monitoring, and AIoT projects. The optocoupler isolation design separates low-voltage control signals from high-voltage load circuits.
Core Selling Points:
Optocoupler isolation helps protect the connected mainboard from high-voltage surges and electromagnetic interference. GPIO trigger control supports turning external electrical loads on or off. Reliable relays switch AC and DC equipment, including lights and solenoid valves. Compact layout saves installation space and simplifies wiring.
Technical Specifications:
Model: 3-Ch Relay Expansion Board. Relay Channels: 3. Isolation: Optocoupler Isolation. Control Mode: GPIO Control. Supported Switching: AC and DC devices. Applications: Industrial control, smart home, AIoT, equipment switching, and device monitoring.
Before Purchase:
Confirm compatibility with your developer board and GPIO control requirements before purchase. The mainboard is sold separately.
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by GeekSpace Return Policy
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