Module COMX NBIoT-CN
SKU:M031-B2
Description
Module COMX NBIoT-CN is a NB-IoT wireless communication module designed for the Chinese region Cat-NB frequency band. It features the built-in SIM7020C communication module, uses serial communication (controlled by AT commands), and integrates an SMA external antenna interface to enhance communication quality and signal stability. The SIM7020C module is an optimal solution for low-latency, low-throughput applications, making it highly suitable for IoT applications such as metering, remote control, asset tracking, remote monitoring, telemedicine, and shared bicycles.
Note
Compatibility
When used with the Fire controller, due to PSRAM pin conflicts (G16/G17), please switch the module base DIP switch pins to TX(G0/G13) and RX(G5/G15).
Features
- Designed for the Chinese region
- Stackable design
- Strong signal access capability
- External independent power supply
- AT command control
- SIM card type: Nano
- External antenna: SMA antenna
- Serial communication: UART 115200bps
- Cat-NB frequency bands:
- B1/B3/B5/B8
- Data transfer rate (kbps):
- 26.15(DL)/62.5(UL)
- Network protocols:
- TCP/UDP/LWM2M/COAP/ MQTT/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/OneNET/Telecom Cloud/Ayla Cloud*
Includes
- 1 x Module COMX NBIoT-CN
- 1 x SMA antenna
Applications
- Smart metering
- Remote monitoring
- Shared bicycles
Certifications
- RoHS/REACH/CCC/CTA/SRRC/Mobile/Unicom/Telecom/ATEX
- China Telecom/China Unicom/China Mobile
Specifications
| Specification | Parameters |
|---|---|
| Communication module | SIM7020C |
| Supported Cat-NB bands | B1/B3/B5/B8 |
| Network protocols | TCP/UDP/LWM2M/COAP/ MQTT/HTTP/HTTPS/ TLS/DTLS/DNS/NTP/ PING/OneNET/Telecom Cloud/Ayla Cloud* |
| Communication method | UART 115200bps |
| DC interface specs | 5.5mm |
| Net weight | 40g |
| Gross weight | 75g |
| Product Size | 54 x 54 x 13.2mm |
| Package Size | 165 x 60 x 36mm |
Learn
Frequency bands for some country operators
The following information is for reference only and may not be real-time.
| 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) |
Power supply switching
The module base has a DC power input interface. When using this interface to supply power, please strictly adhere to the input range (5-12V) to prevent module damage. The internal power DIP switch can adjust the voltage level of the internal terminal VIN to adapt to different modules.
Schematics
1/2
PinMap
M5-Bus
Switch
The pins marked
SW on the M5-Bus below can be switched via DIP switches to adapt to different main controllers.| PIN | LEFT | RIGHT | PIN |
|---|---|---|---|
| GND | 1 | 2 | |
| GND | 3 | 4 | |
| GND | 5 | 6 | |
| 7 | 8 | ||
| 9 | 10 | ||
| 11 | 12 | 3V3 | |
| 13 | 14 | ||
| TXD (SW) | 15 | 16 | RXD (SW) |
| 17 | 18 | ||
| 19 | 20 | TXD (SW) | |
| 21 | 22 | RXD (SW) | |
| TXD (SW) | 23 | 24 | RXD (SW) |
| 25 | 26 | ||
| 27 | 28 | 5V | |
| 29 | 30 |
Model Size
Datasheets
- 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