C-Back NB-loT communication module - SIM7020G - for M5StickC and M5StickC Plus - M5Stack A113

C-Back NB-loT is an NB-IoT communication module adapted to work with M5Stack modules of the M5StickC and M5StickC Plus series. The module is equipped with the SIM7020G chip, which covers most of the global CAT-NB frequency band, has an integrated interface for connecting an external SMA antenna , which improves the quality of communication and stabilizes the signal. C-BACK NB-IoT SIM7020G supports the most popular IoT communication protocols (MQTT, HTTP, CoAP, etc.), which are very often used in applications and scenarios that require low latency and low bandwidth. It can be programmed with Arduino IDE, UIFlow as well as AT commands .

Communication module with SIM7020G system.

Communication module C-Back NB-loT - SIM7020G - for M5StickC and M5StickC Plus - M5Stack A113.

• Compatible with the M5StickC and M5StickC Plus series
• Control by AT commands
• UART communication interface with a speed of 115200 bps
• Nano SIM card slot
• The set also includes an external SMA antenna, increasing the range and stabilizing the signal
• SIM7020G National Telecommunications Certification

• Type: communication module
• Built-in chip: SIM7020G
• Supported CAT-NB bands: B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B17 / B18 / B19 / B20 / B25 / B26 / B28 / B66 / B70 / B71 / B85
• Data rate: 126 (DL) / 150 (UL)
• Supported protocols: TCP / UDP / LWM2M / COAP / MQTT / HTTP / HTTPS / TLS / DTLS / DNS / NTP / PING / OneNET / telecommunication cloud
• Communication interface: UART, speed up to 115300 bps
• Dimensions of the module with the antenna: 170.6 x 24 x 21 mm
• Weight: 12.2g

• Mounting pad - 1 piece
• External antenna with SMA connector - 1 piece
• Allen key - 1 piece
• Screws - 2 pieces

Components included in the set.

The manufacturer has also prepared technical specifications that facilitate the implementation of the most popular projects:

• 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
• SIM7020 Series_AT Command Manual_V1.05

• Manufacturer's website: M5Stack A113
• User Guide
• SIM7020 technical documentation
• Layout diagram
• Sample program code - Arduino
  • CBACK_NBIoT - MQTT
  • CBACK_NBIoT - HTTP
• Sample program code - UlFlow