Appliance HAT

6 Channel Quick Connect Relay HAT


In stock

Insulated Spade Connector
1.5mm² to 2.5mm², 15A, 300V

In stock

Handled Jumper Link
0.1" / 2.54mm Pitch

In stock

EAN: 0616908588443 SKU: APPLIANCE-HAT Category:


The Appliance HAT is an I/O automation board for Raspberry Pi with 6 opto-isolated quick connect power relays. Designed for switching household appliances, industrial control or home automation.

Unlike similar products, the Appliance HAT does not require any screw terminals or PCB wire connections. Instead it uses quick connect power relays with integrated spade terminals, which allows six 16A / 250V AC rated power relays to fit onto a single HAT.

Featuring the well-documented MCP23017 16 channel GPIO expander, the Appliance HAT is easy to setup and control via I2C. It can be used with any device featuring an I2C bus and works with 3.3V or 5V devices (eg, Arduino); by selecting the appropriate jumper (see device compatibility). Channels 0-5 (group A) are utilised for the relays, giving you an extra 10 GPIOs for use with your project.

The Appliance HAT is powered through the host Raspberry Pi using the GPIO port and can be used in-conjunction with other expansion boards (check-out our HAT RACK mounting board). Up to eight Appliance HATs can be used with a single Raspberry Pi. The relays can be powered independently by removing the jumper marked “Link”, so you can use an external supply to power the relays, reducing the load on the Raspberry Pi. Use of an external power supply is recommended if you plan to connect multiple HATs to your Raspberry Pi.


  • 6 opto-isolated quick connect power relays with LED indicators
  • Up to 16A @ 250V AC
  • Easy to use interactive web GUI
  • Based on the MCP23017 16-port GPIO expander
  • Jumper selectable I2C address & GPIO voltage (3.3V / 5V)
  • Can be used with 3.3V or 5V I2C host devices (eg, Arduino)
  • Built-in user programmable ID EEPROM
  • Conforms to Raspberry Pi HAT Specifications

What’s Included

  • 1x Appliance HAT
  • 2x Jumper Links

Interactive Web GUI

Once installed on your Raspberry Pi, this interactive GUI allows quick & easy control of your Appliance HAT without the need for any coding. It is designed to be both a user guide & quick reference to the Appliance HAT pinout. The GUI is fully responsive and adapts to any screen size.

Check-out the Live Demo.

Device Compatibility

Appliance HAT is fully compatible with all 40-way Raspberry Pi models and clones.

Device Model Compatibility
Raspberry Pi 1 Model A+/B/B+ ✔️
Raspberry Pi 2 Model B ✔️
Raspberry Pi 3 Model B/B+ ✔️
Raspberry Pi 4 ✔️
Raspberry Pi Zero ✔️
Asus Tinker Board ✔️
Orange Pi ✔️
Odroid ✔️
ATMegaZero ✔️

To use with Arduino or any other 5V device the 3V3 jumper must be moved to 5V.
Use the SDA & SDL breakout pins for I2C communication.

I2C Address Selection

Address A0 A1 A2

Schematic Diagram



  • UL 796 certified manufacturer
  • RoHS compliant (lead free)
  • CE marked


You can find this and our other Raspberry Pi projects on our GitHub page.

Additional information

Weight 88 g
Dimensions 56 × 65 × 38 mm


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