I am trying to figure out how to use this relay module. There is no datasheet that I could find for the whole module, there however are for individual box.
Here is the picture below, there are three jumper pins which read VCC, VCC, GND. And there are four activator pins (I guess) they read GND, IN1, IN2, VCC
At the output end, I got current coming in connected to Middle terminal and receiving wire connected to the one showing Isolated line.
To activate it, I am applying 3V DC -ve on the GND (on the activator pins set) and +ve on the IN1.
Am I doing it wrong ? Here is the URL for further info: http://www.miniinthebox.com/2-channel-5v-high-level-trigger-relay-module-for-arduino-works-with-official-arduino-boards_p727426.html