Review on SainSmart 101 70 100 2 Channel Relay Module by Duane Mann

Yes, it works. This is a dual channel 5V relay capable of switching up to 250VAC at 10A. The only important thing to note is that there is NO high/low trigger select jumper on this board, the Relay only trips when low or grounded. So if you want your code to trigger at a high level, you need to know your code and change it. If you want to trigger high, look for a 5V relay with selectable high/low trigger. This one: https://www.amazon.com/SMAKN%C2%AE-Isolated-Optocoupler-Trigger-Module/dp/B00PXU9A9Y/ref=sr_1_3?s=electronics&ie=UTF8&qid=1509557643&sr=1-3&keywords=5v+ relay+ with +high+low