Raspberry Pi Relay Board

The Raspberry Pi Relay Board gives your Pi the ability to control high voltage/high current devices, easily making normal home appliances become intelligent.

Features

• Standard Raspberry Pi 40PIN GPIO extension header
• Supports Raspberry Pi 2/3/4
• High-quality relays, loads up to 5A 250V AC or 5A 30V DC
• Photo coupling isolation, prevent interference from high voltage circuit
• Onboard LEDs for indicating relays status
• Relay control jumper, allows you to control the relays by custom pins other than the default pins
• Comes with development resources, including examples in wiringPi, WebioPi, shell, python, and bcm2835

What's on the Board

1. Raspberry Pi GPIO interface: for connecting Raspberry Pi
2. Relay screw terminal: for connecting target devices
3. Relays
4. Photocoupler: PC817
5. Relay indicator
1. LED on: relay NC is opened, NO is closed
2. LED off: relay NC is closed, NO is opened
6. Power indicator
7. Relay control jumper
1. short the jumper: control the relays by default I/Os used in the example code
2. open the jumper: control the relays by custom I/Os through jumper wires

Resources

Product WiKi: https://www.waveshare.com/wiki/RPi_Relay_Board