Gravity: 4 Channel Relay Shield for Arduino

IntroductionThis Relay Shield for Arduino acts like a switch. It is commonly used to control anything over 5V such as lamps, water pumps and garage doors. One of the most interesting projects for your boards is perhaps being able to control High power devices like Lamps, water pumps, garage doors and so on. But interfacing with high power and AC is quite a dangerous task when building the circuitry. Relays allow for interfacing an external electrical circuit like a switch. With relays you can now connect external circuit or devices directly to your Arduino.This Arduino Shield is a completely newly designed that is able to control 4 relays at a time. The max switching power DC 90W or AC 360VA gives direct control by Arduino Uno/DFRduino controllers through digital I/Os with external 9V supply. With built-in Xbee socket, it can be wireless remote controlled via Xbee/bluetooth/WPM.This arduino relay shield is an ideal solution for home automation and robotics applications.NOTE:The Arduino board requires an external power supply to drive the xbee module and relays.Warning:Pay special attention to the voltage that is over 38 volts. Project 1: IR Home Automation based on DFRobot's Relay ShieldMaterials:Arduino UNO Rev 34 Channel Relay shieldIR Kit for ArduinoFeaturesCompatible with Arduino UNO Rev3Each Relay has its own test button to test the connectionStandard DFRobot 3 Pin outXBee I/O direct controlSpecificationCompatible with Arduino Rev34 buttons to test moduleLED status indicator of relaySupport Xbee IO directly controlXbee socket for wireless communicationSelectable digital IO pin for control(Default digital 2,7,8,10) 6 channels Analog IO & 13 channels Digital IO Up to 4 Relay with photo-coupled circuitContact Rating 3A AC 120V / DC 24VMax Switching Voltage AC 240V / DC 60V (Less than 38V is recommended)Max Switching Current 5AMax Switching Power AC 360VA / DC 90WElectrical Life (Min) 100,000 OperationsMechanical Life (Min) 10,000,000 OperationsSafety Standard(relay) UL cUL TUV CQCCoil Working Voltage 9VDCWorking temperature -30¡æ to +85¡æWorking Humidity 40% - 85%Size:95x65mmShipping ListRelay Shield for Arduino V2.1 x1Nylon stand-off with screw x2