Wave Pi Pico Industrial 8-Channel Relay Module

This is an industrial 8-channel relay module controlled via RS485 bus, utilizing Modbus RTU protocol. It features embedded protection circuits such as power isolation, ADI magnetical isolation, and TVS diode, etc. It also comes with an ABS enclosure.


The Modbus RTU Relay is very easy to use. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipment and/or applications with high communication requirement.

Quick Spec

  • Operating Voltage: 5V
  • Communication Protocol: USB
  • Communication interface: Micro USB
  • Relay channel: 8 channels
  • Contact form: 1NO 1NC
  • High-quality relay, contact rating: 10A 250V AC or ≤10A 30V DC
  • Dimensions: 145 x 90 x 40mm
  • Net Weight: 313g



Board Layout

  1. Raspberry Pi Pico header
  2. Relay screw terminal: for connecting external devices
  3. Power supply screw terminal: the multi relays are connected in parallel
  4. Pogo pins
  5. USB communication port: connected via pogo pins
  6. BOOT key: connected via pogo pins
  7. Reset key: Pico reset
  8. Passive buzzer: controllable sound frequency
  9. Power indicator
  10. WS2812: RGB LED
  11. 8-channel quality relays: contact rating per channel - ≤10A 250V AC or ≤10A 30V DC
  12. Relay operating indicator
  13. Photocoupler isolation: prevent interference from external high-voltage circuit connected to the relay
  14. Power supply isolation: provides stable isolated voltage, needs no extra power supply for the isolated terminal
  15. Thickened tracks: allows large current devices


Shipping List

  • 1 x ABS protection enclosure (top and bottom)
  • 1 x Pico-Relay-B
  • 1 x Screwdriver
  • 1 x Screws pack

Wave Pi Pico Industrial 8-Channel Relay Module

  • Brand: Waveshare
  • Product Code: W20218
  • Weight: 0.313kg
  • Stock

    Warehouse Stock Status Location
    Centurion In Stock T015
    Stellenbosch In Stock Y0094

    We ship free of charge between branches to complete your order.

  • R298.00 (Inc Tax: R342.70)

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Tags: wave, rasp, raspberry, pi, pico, industrial, 8 channel, 8 way, relay, module, 5v, rs485, modbus