Looks the same to me (5V, only 4 relays) except this is controlled by some app over wifi. Honestly I am not a person that can give you 100% working solution. Only ideas. I am a beginner myself. If I were you I would buy the dispenser, create the extension cord, measure with multi-meter what is happening over the wires when you press individual buttons and try to simulate this. I think if you manage to simulate it manually then you will be able to build some more sophisticated remote control. (The last module you linked would be cool that you could dispense it using voice command. Like "Alexa, rum please! :)" ) And seriously what is with the joystick?