Waveshare RPi Relay Board, RPi Relay Board

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

RPi Relay Board Features
1. Supports Raspberry Pi A+/B+/2B/3B/3B+
2. High quality relays, loads up to 5A 250V AC or 5A 30V DC
3. Photo coupling isolation, prevent interference from high voltage circuit
4. Onboard LEDs for indicating relays status
5. Relay control jumper, allows to control the relays by custom pins other than the default pins
6. Comes with development resources, including examples in wiringPi, WebioPi, shell, python, and bcm2835

What is on the RPi Relay 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
- LED on: relay NC is opened, NO is closed
- LED off: relay NC is closed, NO is opened
6. Power indicator
7. 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

Package include
- RPi Relay Board x 1
- RPi screws pack (2pcs) x 1