Your Suunto EON Steel Black can be used with the total number of twenty (20) gases per dive mode, each of which may have Suunto Tank POD for wireless tank pressure transmission.
To install and pair a Suunto Tank POD, see How to install and pair a Suunto Tank POD.
In tank pressure view, you can see the below screens.
The following example has the tank pressure alarm set to 100 bar. The tank pressure is 75 bar as indicated in the switch window in the bottom right corner.
Tank pressure is shown in yellow when it is over 50 bar (720 psi) and below the tank pressure alarm value set by the user:
When the tank pressure drops below 50 bar (720 psi), the actual tank pressure value is indicated in red in the switch window and a mandatory alarm is triggered: