The v2 controller has on board interface circuitry that allows it to support most sensor types including digital, analogue, serial, 1-wire, i2c and even usb based sensors. water quality sensors can be connected easily as well. work easy with the v2 .Information on how to connect typical sensors to a v2 controller board can be found here
The default username is ‘root’ and the default password is ‘tempV2pwd’ without the quotes.
You will need a 9+-48v dc power adapter (with inside of power jack being positive). You will also need an ethernet cable and computer with an ethernet port (or usb ethernet adapter). Finally you need credentials to your wifi network.