> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Industrial 8-Channel Relay Module for Raspberry Pi Pico

**Type:** Product page · **SKU:** WS-20218 · **Brand:** [Waveshare](https://core-electronics.com.au/brands/waveshare-in-australia)
**Page:** https://core-electronics.com.au/industrial-8-channel-relay-module-for-raspberry-pi-pico-multi-protection-1.html ([markdown](https://core-electronics.com.au/industrial-8-channel-relay-module-for-raspberry-pi-pico-multi-protection-1.html.md))

Industrial 8-Channel Relay Module For Raspberry Pi Pico, Power Supply Isolation, Photocoupler Isolation...

## Pricing

- **Price:** $33.35 (inc GST) — $30.32 AUD, exc GST
- **Quantity discounts:** 10+ $29.11 (exc GST) · 25+ $28.20 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 5 today, and up to 300 more in 12–19 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=WS-20218:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/WS-20218:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The device includes photocoupler isolation to protect against interference from external high-voltage circuits connected to the relay. It features a robust relay rated for 10A at 30V DC. Housed in an ABS enclosure with rail-mount support, it's easy to install and safe to use. A breakout USB port and BOOT pin simplify debugging without needing to open the enclosure. Outside the enclosure, you'll find a PWR indicator, an RGB LED, and a passive buzzer.

## Specifications

**Operating voltage:** 5V

**Relay channels:** 8 Channels

**Communication protocol**: USB

**Contact form**: 1NO 1NC

**Communication interface**: Micro USB

## What's On Board

## ![](https://core-electronics.com.au/attachments/localcontent/Pico-Relay-B-details-intro_19308def3c6.jpg)

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
 
## Pinout

## ![](https://core-electronics.com.au/attachments/localcontent/Pico-Relay-B-details-inter_152866cf387.jpg)

## Dimensions

## ![](https://core-electronics.com.au/attachments/localcontent/Pico-Relay-B-details-size_161287c0e33.jpg)

## Resources

- Wiki

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/C/E/CE08599-1.jpg)