Raspberry Pi Expansion Board Power Relay

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

Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi series boards
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 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 RPi Relay 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

Dimensions

Development Resources
Wiki :www.waveshare.com/wiki/RPi_Relay_Board
Package Content

RPi Relay Board x 1
RPi screws pack (2pcs) x 1