What’s the difference between the Rcom 10 Pro and Rcom 10 Pro+?

There is only one difference between the Rcom 10 Pro and Rcom 10 Pro+; humidity control.

You must control the humidity manually for the Rcom 10 Pro. Although it has a humidity display, you must add water to the machine manually.

Whereas, on the Rcom 10 Pro+, the humidity is controlled automatically via an automatic pumping system (APS). The APS injects water into the machine for you as and when it is required to achieve the set humidity level. The pump will only start pumping when the humidity inside the machine drops below the set value. However, you can buy the pump upgrade for the Rcom 10 Pro later if you like since it is available as a separate option too.