Through internet, we have access to information from the measurements made by each of the probes that we installed in our tanks with fluid.
Thus, we have monitored the actions of the different devices at all times, so as to have the reassurance that the system will advise you of when it will be necessary to recharge the tank, or when they come to fill it.
It is the safest and quickest way to know everything that happens in our tank without leaving our job or home PC.