I know this product https://www.droking.com/400W-NC-Voltage-Regulator-Power-Supply-Module-DC-6-65V-to-0-60V-8A-Buck-Adapter-Charger-Voltmeter-Ammeter-Capacity-Meter-Time-Meter (200220) support a serial communication protocol and it works as I already have this model, however I find that it is a little bit big for my need.

From you web site, it is really not clear which of your products have a communication protocol (and the pinout on the board). Also the documentation such as baud rate and commands is always hard to find.

Do you have a list of all products supporting a serial protocol to interface and control the modules?

I am looking for a module that would be around the size of that one: https://www.droking.com/LM2596-Immersion-Gold-Power-Supply-Module-DC-3V-40V-to-1.23-37V-3A-Regulator-DC-12V-24V-Adapter-Switching-Power-Supply and with the same power specifications would be fine, but I need to have a communication interface.

My use case is that I drive the power module from a remote MCU and I need a reliable way to change voltage and or current and turn on or off seamlessly and quickly. Also being able to read the current values is important as well (just like the 200220).