1. Nb-iot base station can be used without a central gateway
2. Supports a variety of low-power operation modes
3. High-performance 32 bits microcontroller
4. Supports low power serial port (LEUART) communication, TTL level 3V
5. The semi-transparent communication mode communicates with the server directly through a low-power serial port
6. Compatible NanoSIM eSIM
7. Read parameters, set parameters, report data, and deliver commands through the low-power serial port
8. HAC communication protocol must be matched, or protocol can be customized as required
9. The server protocol is resolved by COAP+JSON