Review on SainSmart 101 70 100 2 Channel Relay Module by Seth Torres

Great for my little time based projects (latest project, time based doorbell)**NOTE (you don't need to remove the asterisk for this)**This is a Solenoid Relay which means that You need to send HIGH voltage (5V) for OFF and LOW voltage for ON. Make sure the ground is also connected. There was no mention of it, so I'm writing this review for the next person who buys it. A nice *CLICK* to hear the relays working, plus an LED indicator for each relay.