Appliance HAT

1 review

6 Channel Quick Connect Relay HAT


5 in stock

Optional Extras
Handled Jumper Link

35 in stock

EAN: 0616908588443 SKU: APPLIANCE-HAT Categories: ,


The Appliance HAT is an I/O automation board for Raspberry Pi with 6 opto-isolated quick connect power relays. Perfect for robotics or home automation applications.

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 separately 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

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

Device ModelCompatibility
Raspberry Pi 1 Model A+/B/B+✔️
Raspberry Pi 2 Model B✔️
Raspberry Pi 3 Model B/B+✔️
Raspberry Pi 4✔️
Raspberry Pi 5✔️
Raspberry Pi Zero✔️
Raspberry Pi Zero 2✔️
Asus Tinker Board✔️
Banana Pi✔️
Orange Pi✔️

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


Schematic Diagram



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


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

Additional information

Weight88 g
Dimensions56 × 65 × 38 mm

1 review for Appliance HAT

  1. john g. (verified owner)

    The appliance had was delivered promptly and is as advertised. The demo software works as expected. The associated small parts (spades, standoff, jumpers) all fit.

    I would like to get a raspberry pi case/enclosure that fits a raspberry pi with the appliance hat.

    (1) (0)
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