Description:  Unit NB-IoT The NB-IoT wireless communication module applicable to the global range Cat-NB frequency band. Built-in SIM7020G communication module, using serial communication (AT command set control), integrated SMA external antenna interface, improving the device communication quality and signal stability, SIM7020G module is the best low-latency, low-throughput application The excellent solution is very suitable for IoT applications such as metering, remote control, asset tracking, remote monitoring, telemedicine, and shared bicycles.     Product Features:  Global version/multi-band support.  Strong signal access capability.  AT command control.  SIM card type: Nano.  External antenna: SMA antenna.  Serial communication: UART 115200bps.  Cat-NB frequency band: B1/B2/B3/B4/B5/B8/ B12/B13/B17/B18/B19/ B20/B25/B26/B28/ B66/B70/B71/B85.  Data transmission (kbps): 126(DL)/150(UL).  Network protocol:  -TCP/UDP/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/LWM2M/COAP/ MQTT/MQTTS.     Specification:  Support Cat-NB frequency band: B1/B2/B3/B4/B5/B8/ B12/B13/B17/B18/B19/ B20/B25/B26/B28/ B66/B70/B71/B85.  Network protocol:  TCP/UDP/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/LWM2M/COAP/ MQTT/MQTTS.  communication: UART 115200bps.  Net weight: 12.8g.  Gross weight: 55g.  Product Size: 71.5*24*8mm.  Package Size: 95*65*25mm.     Package Included:  1 x Unit NB-IoT.  1 x SMA antenna.  1 x HEX KEY.     Applications:  Smart meter.  Remote monitoring.  Shared bicycles