I have 105ah + 125ah battery 12v battery packs in my own travel trailer, with "100A" and "120A" Daly Smart BMS units respectively. Both have BT comm interfaces. When the cellphone App starts up, it shows two compatible devices by address. (You can't give the addresses names, but you can distinguish one battery from another by the AH size parameter. In my case they're genuinely different - but for two identical 100Ah batteries you could just set the size of one as "99Ah", with the other set to "100ah".)
The 100A Daly has slightly different hardware and software than the slightly newer 120A. From the App, I am unable to set "SOC" within the 100A unit. But that's not a significant issue, because the Daly "SOC" display seems pretty worthless. (Maybe that's because "SOC" is based on voltage, rather than coulomb-counting, or maybe it's because Daly BMS doesn't pay attention to loads or charging with lower current levels. Or maybe both.)
In any case, Daly BMS is not a reliable coulomb counter meter - you will need a different one. I use just one meter on the entire bus, although meters for each individual battery would be more informative in the case of one battery developing performance issues due to a loosening connection, or a change in internal resistance. The case of a failing cell is well-covered already, with the cellphone App displaying the voltage of individual cells with the batteries upon connection.
- - -
Lots of people hate "Daly SMART BMS" units, recommending other brands. But I have not had any bad experiences with my pair of units (yet). I do not know how easily they may recover from shutdowns caused by over-current, over-voltage, or over-temp. I also don't know whether they are more (or less) prone to having the charge/discharge control circuits fatally "burned out" before executing the disconnection, in comparison to other brands.
I have not yet abused my batteries with any of those situations, and have no intention of "testing" BMS by creating such abuse. I have, however, left my batteries charging through a few sub-freezing nights - and I have observed (carefully, the first time) that the shutdown of the "Charge" circuitry does work correctly, preventing battery charge at temps below about 4C. This auto-recovered when they became warmer on the following day.