Question on the new Arduino Serial Component

While working on my automated hydroponic system, I needed an app which could read serial data from the arduino (uno). And I came across the new serial component in the mit app inventor, but I had a few doubts.

  1. How does this component work? (I couldn’t quite understand the description on the website)

  2. Can I display various data with it? (Like I need the data from the ph sensor to go in one box and the data from the temperature sensor on another)

  3. can I view the data on an android device using an otg cable with an arduino.

And I also have another query regarding the control of 5v relay connected to an arduino from the app.

Here's an informed thread ...

Thank you @ABG for that