Raspberry Pi 8-ch Relay Expansion Board
We have ✅ 3 available of the WS-15423 in our Sydney warehouse. An extra 10 units available with a short lead time.
The RPi Relay Board (B) is an 8-channel relay expansion board for Raspberry Pi, giving your Pi the ability to switch high-voltage loads such as home appliances, lighting, motors, and other AC/DC devices. Each relay handles up to 5A at 250V AC or 30V DC, with photo-coupled isolation to protect the Pi from high-voltage interference.
Connects via the standard 40-pin GPIO header and includes a jumper block for remapping relay control to custom GPIO pins. A standard DIN rail mount case is included for clean panel installation. Development resources cover wiringPi, bcm2835, Python, web control (Python Bottle), and cron job scheduling.
Key Features
- 8 Relay Channels – SPDT contacts (NO and NC) with screw terminal connections
- 5A @ 250V AC / 5A @ 30V DC – Suitable for switching mains-powered devices
- Photo-Coupled Isolation – Protects the Raspberry Pi from high-voltage interference
- Status LEDs – One per relay for at-a-glance state monitoring
- Pin Remapping Jumpers – Reassign relay control to custom GPIO pins
- DIN Rail Mount Case – Standard C45 35 mm rail compatible for panel installation
- Reserved Control Interface – Allows connection to PLCs and other controllers
- Low-Level Trigger – Relays activate when GPIO output is low
Specifications
- Power Supply: 5V
- Trigger Signal: 3.3V / 5V
- Relay Channels: 8
- Contact Form: SPDT (NO + NC)
- Closed Current: 6 mA per channel
- Connector: Screw terminal block
- Dimensions: 232 × 72 mm
- Mounting Hole Size: 3.0 mm
Compatibility
- Raspberry Pi (all 40-pin models)
- Jetson Nano
Ideal For
- Home automation and smart appliance control
- Industrial control panels and DIN rail installations
- Irrigation and greenhouse automation
- Lighting control and scheduling
Resources
The Raspberry Pi 8-ch Relay Expansion Board appears in the following collections:
