RS485:
1-transmission faster and longer than UART but not as fast as CANbus.
2-can be connected with touchable screen and PC by one of them.
3-Bluetooth function.
4-Customized (for bms below 6s including 6s , Rs485 and BT function cannot be used at the same time)
5-For windows system only

UART:
1-Can be connected with PC by USB to UART and set parameters.
2-Bluetooth function.
3-For windows system only

Bluetooth module:

Configuration for all smart bms, can be used with Smart Mobile Phone ONLY!!!

Power display board:

Indicate battery power capacity by percentage and can awake the smart bms after the first charging activation.CanNot be used with smart bms 3S, smart bms 4S, smart bms 5S,smart bms 6S, Neither the 30A, 40A, 60A of smart bms 7S, smart bms 8S, Smart bms 10S

BMS touchable screen:

There are connection methods for touchable screen, high strings of bms above 10s with touchable screen is recommended .