Unit NBIoT-CN
Description
Unit NB-IoT CN is a NB-IoT wireless communication module that matches the China region Cat-NB frequency band. Built-in SIM7020C communication module, adopts serial communication (AT command set control), and integrates SMA external antenna interface to improve the communication quality and signal stability of the device. The SIM7020C module is the best for applications with low latency, low throughput. The excellent solution is very suitable for IoT applications such as metering, remote control, asset tracking, remote monitoring, telemedicine, and shared bicycles.
Features
Applicable to China
Strong signal access capability
AT command control
SIM card type: Nano
External antenna: SMA antenna
Serial communication: UART 115200bps
Cat-NB frequency band:
- B1/B3/B5/B8
Data transmission (kbps):
- 26.15(DL)/62.5(UL)
Network protocol:
- TCP/UDP/LWM2M/COAP/ MQTT/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/OneNET/Telecom Cloud/Aila Cloud*
Include
- 1x Unit NB-IoT CN
- 1x SMA antenna
- 1x HEX KEY
Applications
- Smart meter
- Remote monitoring
- Shared bicycles
Certification
- RoHS/REACH/CCC/CTA/SRRC/Mobile/Unicom/Telecom/ATEX
Operator certification
- China Telecom/China Unicom/China Mobile
Specifications
| Resources | Parameter |
|---|---|
| Module | SIM7020C |
| Support Cat-NB frequency band | B1/B3/B5/B8 |
| Network protocol | TCP/UDP/LWM2M/COAP/ MQTT/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/OneNET/Telecom Cloud/Aila Cloud* |
| communication | UART 115200bps |
| Net weight | 12.8g |
| Gross weight | 55g |
| Product Size | 71.5*24*8mm |
| Package Size | 95*65*25mm |
Pin mapping
| M5Stack | TX(GPIO17) | RX(GPIO16) | 5V | GND |
|---|---|---|---|---|
| Unit NB-IoT CN | RX | TX | VIN | GND |
Schematics
Related Link
- Datasheet
- SIM7020 Series datasheet
- SIM7020 Series_Ayla_Application Note_V1.03
- SIM7020 Series_CTBURST_Application Note_V1.01
- SIM7020 Series_CoAP_Application Note_V1.03
- SIM7020 Series_EAT_Environment & Compilation & Burning Guide_V1.02.
- SIM7020 Series_FOTA_Application_Note_V1.02
- SIM7020 Series_HTTP(S)_Application Note_V1.04
- SIM7020 Series_LWM2M_Application Note_V1.03
- SIM7020 Series_Low Power Mode_Application Note_V1.05
- SIM7020 Series_MQTT(S)_Application Note_V1.05
- SIM7020 Series_NVRAM_Application Note_V1.02
- SIM7020 Series_SAT_Application Note_V1.01
- SIM7020 Series_SNTP_Application Note_V1.03
- SIM7020 Series_TCPIP_Application Note_V1.04
- AT Command