DFRobot 4 Channel Relay Shield for Arduino<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>This arduino relay shield acts like a switch. It is commonly used to control anything over 5V such as lamps， water pumps and garage doors.</li><li>This relay shield is an ideal solution for home automation and robotics applications</li><li>Compatible with Arduino UNO Rev3</li><li>Each Relay has its own test button to test the connection</li><li>Standard DFRobot 3 Pin out; XBee I/O direct control</li></ul></div><img src="http://ecx.images-amazon.com/images/I/312h5YJYTwL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31aVr6tQQeL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31A%2BI8ZPTzL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51NC1LVwhTL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51NCO3pN3ML.jpg" noproxy>