Raspberry Pi Pinout

30A Relay HAT

The 30A Relay HAT is a dual SPDT power relay I/O board based on the Microchip MCP23008 I2C expander. Ideally suited to automation or industrial control, switching of household appliances, industrial machinery or automotive applications.


  • 2 opto-isolated SPDT power relays
  • 30A / 15A @ 250V AC (NO / NC)
  • Supports up to 6mm2 / 10 AWG cable
  • 2oz copper PCB ensures maximum current flow
  • Easy to use interactive web GUI
  • Based on the MCP23008 8-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

Easy Installer

Our easy installer takes care of the setup process automatically.

sudo wget https://git.plasmadan.com/install.sh
sudo sh install.sh

Alternatively, you can install manually. See our setup guide.


  • fabriqué par PlasmaDan
  • carte au format HAT
  • identification produit par EEPROM
  • alimentation 5v et 3v3
  • 2 broches GPIO actives
  • communication par bus I2C
  • 0x20: MCP23008 (Alt: 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27)
  • plus d'info
  • lien GitHub
  • schéma
  • achat
30A Relay HAT