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

* Raspberry Pi GPIO interface: for connecting Raspberry Pi

* Relay screw terminal: for connecting target devices

* Relays

* Photocoupler: PC817

* Relay indicator

* LED on: relay NC is opened, NO is closed

* LED off: relay NC is closed, NO is opened

* Power indicator

* Relay control jumper

* short the jumper: control the relays by default I/Os used in the example code

* open the jumper: control the relays by custom I/Os through jumper wires

Resources Product WiKi: https://www.waveshare.com/wiki/RPiRelayBoard