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CONTENTS

Module COMX NBIoT-CN

SKU:M031-B2

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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 dimensions 54 x 54 x 13.2mm
Package dimensions 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

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PinMap

Adjust the DIP switch to the corresponding pins according to different host requirements.
Controller CoreS3 Core2 Core
RXD 17/0/7 14/0/19 17/0/13
TXD 18/1/13 13/33/2 16/5/15

Datasheets

Softwares

Arduino