> **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

# Grove - Relay (Seeed Studio)

**Type:** Product page · **SKU:** SS103020005 · **Brand:** [Seeed Studio](https://core-electronics.com.au/brands/seeed-studio-australia)
**Page:** https://core-electronics.com.au/grove-relay-seeed-studio.html ([markdown](https://core-electronics.com.au/grove-relay-seeed-studio.html.md))

The Relay is a digital normally open switch that controls a relay capable of switching much higher voltages and currents than your normal Arduino boards...

> ⚠ Warning: this product if used with high voltages (such as 240VAC) requires a license to work with in most regions.

## Pricing

- **Price:** $5.90 (inc GST) — $5.36 AUD, exc GST
- **Quantity discounts:** 10+ $5.15 (exc GST) · 25+ $4.99 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 50 more in 8–10 days.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SS103020005:1` (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/SS103020005:1.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 Relay is a digital normally open switch that controls a relay capable of switching much higher voltages and currents than your normal Arduino boards. When set to HIGH, the LED will light up and the relay will close allowing current to flow. The peak voltage capability is 250V at 10 amps.

Dimension: 42.00mm\*24.00mm\*19.50mm

For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through [Preface - Getting Started](https://core-electronics.com.au/attachments/localcontent/Preface_164458957de.pdf) and [Introduction to Grove](https://core-electronics.com.au/attachments/localcontent/IntroductiontoGrove_50139924b1c.pdf) before your using of the product.

### Documents

- [Manufacturer's Product Wiki](https://wiki.seeedstudio.com/Grove-Relay/)
- [Grove - Relay Schematic and PCB in Eagle format](https://core-electronics.com.au/attachments/localcontent/Grove-Relay_Eagle_Files_342999e1df6.zip)
- [Grove - Relay PCB in PDF format](https://core-electronics.com.au/attachments/localcontent/Grove-RelayPCB_2231311ec58.pdf)
- [Grove - Relay Schematic in PDF format](https://core-electronics.com.au/attachments/localcontent/Grove-RelaySchematic_2400364e1e7.pdf)
- [HLS8-T73 Series Relay Datasheet](https://core-electronics.com.au/attachments/localcontent/Relay_Datasheet_95675a5312c.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/0/1030200051.jpg)