What about calibrating probes? You know what a hassle it is to push those tiny buttons on the front of the P4, run downstairs to the second tank setup, rinse then dry the probe, put it in the fluid, run back upstairs to click the button, wait, run downstairs, rinse & dry, put in next fluid, run upstairs.....Quick note about backing up/restoring settings and firmware updates.
This is the last thing which can't be done via GHL Connect (app, web interface, cloud) yet and for what GHL Control Center still must be used.
But we are currently working on it, in the next weeks we will see a huge GHL Connect update with which you can update your ProfiLux 3 and 4 and connected PAB-devices firmware and which offers all backup functions. PAB firmware updates through P3 is already implemented in the current beta-version, rest follows ASAP.
You get the idea - would really have loved to be able to calibrate probes through some means other than the tactile buttons on the controller.