2 X 5V 1-Channel Relay Module With Optocoupler Low Level Trigger for Arduino<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> The module complies with international safety standards， the control area and the load region isolation trench. </span></li><li><span class="a-list-item"> With the power supply and relay instructions， pull off， disconnect does not shine. </span></li><li><span class="a-list-item"> The control DC or AC signal， you can control 220V AC load. </span></li><li><span class="a-list-item"> There is a normally open and one normally closed contact. </span></li><li><span class="a-list-item"> Blue KF301 terminals to the control line is more convenient. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51cJB74ZSdL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51muYWb-IFL.jpg" noproxy>