> **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

# Arduino MKR Relay Proto Shield

**Type:** Product page · **SKU:** TSX00003 · **Brand:** [Arduino](https://core-electronics.com.au/brands/arduino-australia) · **GTIN:** 7630049200760
**Page:** https://core-electronics.com.au/arduino-mkr-relay-proto-shield.html ([markdown](https://core-electronics.com.au/arduino-mkr-relay-proto-shield.html.md))

The MKR Relay Proto Shield allows you to easily command relays with your MKR board. The shield provides two on board relays and a small prototyping area if you need to add some other component to your project.

## Pricing

- **Price:** $39.95 (inc GST) — $36.32 AUD, exc GST
- **Quantity discounts:** 5+ $35.95 (exc GST) · 10+ $35.59 (exc GST) · 30+ $35.23 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=TSX00003:1` (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/TSX00003:1.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 MKR Relay Protoshield allows you to easily add relays to your MKR board based project.

The shield provides two relays ([Datasheet](https://core-electronics.com.au/attachments/localcontent/en-g5v_1_89422671059.pdf)) called RELAY1 and RELAY2 commanded by pin 1 and pin 2 respectively.

The shield also provides an easy connection by means of screw terminal blocks to A1 to A4 analog inputs, I2C and supply voltages.

- Operating voltage 3.3V (supplied from the host board)
- Two relays with NO, COM and NC connections
- Works with battery powered board
- 8 positions screw terminal blocks for easy connections with A1 to A4 Analog input, SCL SDA for I2C, GND and 3.3V output
- 6 positions screw terminal blocks (NO, COM, NC for each relay)
- Carry current: 2 A
- Max. operating voltage: 24 VAC, 50 VDC
- Max. operating current: 1 A
- Max. switching capacity: 62.50 VA, 30W
- Proto area
 
You can find here your board warranty information.

OSH: Schematics MKR Relay Proto Shield is open-source hardware! You can build your own board using the following files:

- [Eagle Files](https://core-electronics.com.au/attachments/localcontent/MKRRelayShield_V4_33549c29585.zip)
- [Schematics](https://core-electronics.com.au/attachments/localcontent/MKRRelayShield_V4_43541b10bc2.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/t/s/tsx00003_iso_3.jpg)