Introduction

The DFRobot Relay Module is a standard relay used with a controller board to interface external electrical circuits or modules. Some of the most common applications with Arduino are: Home lighting, electrical appliances of high power and other equipments. The modular design makes it easy to integrate with a controller board. The Relay integrates a status LED, in order to acknowledge visually it’s status ON or OFF. It can be controlled through the digital IO port, with a simple HIGH or LOW on Arduino compatible boards. Other boards will work requiring same voltage level. Other usages include control of solenoid valves, lamps, motors and other high current or high voltage devices.

Latest Update: V3.1

Improved the silkscreen on the bottom layer of the sensor to indicate the hardware connection.
Some kits may include acrylic holder and nylon screw set to prevent shorting of high power interface with metalic surface.

Specification

Single relay board
Rated through-current: 10A (NO) 5A (NC)
Maximum switching voltage: 150VAC 24VDC
Interface: Digital
Control signal: TTL level
Contact Rating (Res. Load): 10A 250VAC / 24VDC
Max. switching voltage 250VAC / 30VDC
Max. switching current 15A
Max. switching power 250VA 240W
UL Rating: 10A 120VAC / 10A 250VAC
Operate time (at nomi. Vot.): 10ms
Release time (at nomi. Vot.): 5ms
High quality connector
Immersion gold surface

Documents

Wiki (Relay Module (Arduino Compatible))
Datasheet
Schematic
How to use relay tutorial

Shipping List

Gravity Relay Module V3.1 x1
Digital Cable x1

ProjectsProject 1. Using the Arduino Xboard to control a relay
In this project you will find how to use the XBoard with xbee along with another arduino to control some objects over your local network.
Hardware needed:

1 Arduino
1 Xboard
1 FTDI programmer
1 Relay
1 CAT5 cable
1 pair of xbee modules
1 computer
1 Internet router
hookup wire

Project 2. How to Make An Automatic Water Changing System
Main Components:
DFRduino UNO R3 *1
Gravity: IO Expansion Shield for Arduino V7.1 *1
Gravity: Analog Turbidity Sensor For Arduino *1
Immersible Pump & WaterTube *1
Gravity: Analog pH Sensor / Meter Kit For Arduino *1
Wall Adapter Power Supply 12VDC *1Solenoid Valve *1
Gravity: Digital 5A Relay Module *1
Water Pipe *2m
Interface (for solenoid valve) *2
I2C 16×2 Arduino LCD Display Module
Project 3. How to Make an Automatic Christmas Tree
With all the lights and decorations that people use at Christmas, power is left on all the time and electricity bills skyrocket. I made this motion detecting Christmas tree light setup that only turns on when people are nearby.
Hardware list:
PIR Sensor x1
Bluno x1
I/O Expansion Shield v7.1 x1
LED Strip x1
Relay Switch x1
Mini mp3 module
DFSpeaker v1.0
Regular power extension lead (with some modifications)
1k resistors x2