This DFRoobot Relay Shield V2.1 is a completely new design which is capable of controlling 4 relays at a time. The max switching power could be DC 90W or AC 360VA. It could be directly controlled by Arduino/DFRduino controllers through digital I/Os with external 9V supply. With built-in Xbee socket, it can be wirelessly controlled via Xbee/bluetooth/WPM.
This relay shield is an ideal solution for home automation and robotics purposes.
New Features
Compatible with Arduino UNO Rev3
Each Relay has its own test button to test the connection
Standard DFRobot 3 Pin out
XBee I/O direct control
Specification
Compatible with Arduino Rev3
4 buttons to test module
LED status indicator of relay
Support Xbee IO directly control
Xbee socket for wireless communication
Selectable digital IO pin for control(Default digital 2,7,8,10)