Not sure about a port for custom config, I believe some newer ones may have UART or CAN or something as an option, but the original ("non-smart") Daly BMSes are not user configurable. Its their weakness and strength. No ability to tweak or fine tune, but also zero configuration burden on the user and no settings to screw up which many newbies value. All of their older models (up until this year) were this way as far as I know. This year the Daly Smart BMS was released which is more configurable and has monitoring functionality. Since then they have iterated some, and I'm not sure what all has changed, and my knowledge may not be up to date. But what I can say is that most models of the Daly BMS up until the release of the Daly Smart, are not user configurable, and do not have functional low temp cutoff. I believe the factory defaults are something like HVD of 3.7 or 3.75 and LVD in the ballpark of ~2.2-2.6. The
model I just checked has limits of 2.2V and 3.75V, I believe Daly will customize these settings for you, I am not sure if there is a fee or minimum order quantity for custom settings.