Current Product Don't Have Test Firmware
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1. Click connect button
2. After connected successfully, pick a firmware
3. Click the burn button
4. After burning successfully, Unplug the device and restart.
COM.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.
When used with the FIRE main control, due to the PSRAM pin conflict, please switch the DIP switch pins of the module base to TX(0/13), RX(5/15), and the device can use USB/ External DC is used for power supply.
When used with Core2 series main control, due to the different order of the base pin array, COM.X base pins TX(16), RX(17) correspond to the actual pins TX(14), RX of the Core2 main control (13) The equipment needs to use external DC for power supply.
Applicable to China
Stackable design
Strong signal access capability
Independent external power supply
AT command control
SIM card type: Nano
External antenna: SMA antenna
Serial communication: UART 115200bps
Cat-NB frequency band:
Data transmission (kbps):
Network protocol:
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 |
DC interface specifications | 5.5mm |
Net weight | 40g |
Gross weight | 75g |
Product Size | 54*54*13.2mm |
Package Size | 165*60*36mm |
The module base has a DC power input interface. Please strictly follow the input range (5-12V) to prevent damage to the module when using this interface to connect to the power supply. The internal power DIP switch can adjust the voltage level of the internal terminal VIN to adapt to different modules.
The following content is for reference only.
North America | B4 (1700), B12 (700), B66 (1700), B71 (600), B26 (850) |
---|---|
Asia Pacific | B1(2100), B3(1800), B5(850), B8(900), B18(850), B20(800), B26(850),B28(700) |
Europe: | B3 (1800), B8 (900) , B20 (800) |
Latin America | B2(1900), B3(1800), B5(850), B28(700) |
Commonwealth of Independent States | B3 (1800), B8 (900), B20 (800) |
Sub-Saharan Africa | B3(1800), B8(900) |
Middle East, North Africa | B8(900), B20(800) |
M5Stack | TX(GPIO0/13/17) | RX(GPIO5/15/16) | 5V | GND |
---|---|---|---|---|
COM.NB-IoT CN | RX | TX | VIN | GND |
According to the different needs of different hosts, the DIP switch fluctuates to the corresponding pin.
M5Stack HOST | CORES3 | CORE2 | CORE |
---|---|---|---|
RXD | 17/0/7 | 14/0/19 | 17/0/13 |
TXD | 18/1/13 | 13/33/2 | 16/5/15 |