This Link can support Bluetooth and UART communication. For our smart bms,when first use,need to activate first,then B- P- can be conductive,BMS can work well.
Activation method: Charge activation, B-line must be connected to the total negative pole of the battery pack when charging . 3S~5S, J series (10J, 16J ) BMS only can be activated by this way. BMS shipping package includes accessories BT module *1pcs and USB cable 1pcs and balance cable *1pcs and English manual *1pcs,Package also come with B-P- cable,NTC cable(temperature sensor).
the Android and IOS APP available to download.
Pls refer to following link to understand bluetooth set up by APP.