M5Stack IoT Base with CAT-M Module Communication Base

IoT Base CatM DualMode CatM & NBIoT Communication Base

The IoT Base CatM is a functional IoT communication base designed for data transmission scenarios requiring lowlatency, lowthroughput, and longterm operation. Powered by the SIM7080G communication module, it supports CatM & NBIoT dual modes, covering most global frequency bands to meet diverse regional requirements.

With UART AT command control, SMA external antenna, and MicroSIM card slot, the IoT Base CatM ensures reliable connectivity. It integrates rich expansion interfaces (I2C, UART, GPIO, RS485, battery power interface) and supports ModBus industrial protocols, making it ideal for remote control, monitoring, telemedicine, and cloud data applications.

Features

• SIM7080G communication module

• CatM & NBIoT dualmode support (global multiband)

• UART interface with AT command control

• MicroSIM card slot

• SMA external antenna interface

• Expansion interfaces: RS485, I2C, GPIO, UART, battery power

• Supports industrial protocols (ModBus)

• Certified globally: Softbank, Telec, Docomo, KDDI, RCM, CERED, GCF, FCC, PTCRB, AT&T, Verizon, TMobile, US Cellular, Deutsche Telekom, RoHS, REACH

Package Contents

• 1 IoT Base CatM

• 1 SMA Antenna

• 1 12 V DC Power Adapter (US standard)

• 1 VH3.962P Terminal

• 1 VH3.964P Terminal

• 1 DINmount rail base plate

• 2 M328 screws

• 1 M3 hex key

Applications

• Remote control & monitoring

• Cloud data applications

• Telemedicine & healthcare IoT

• Bike sharing systems

• Data acquisition & industrial IoT

Technical Specifications

Certifications

• SIM7080G_AT&T_Certificate_2020
• SIM7080G_GCF_Certificate_2020
• SIM7080G_NCC_2020
• SIM7080G_PTCRB_Certificate_2020
• SIM7080G_RCM_Compliance Certificate_2020
• SIM7080G_T-mobile_Certificate_2021
• SIM7080G_US Cellular_Certificate_2021

Schematics

PinMap

• SIM7080G

• RS485

• HY2.0-4P

M5-Bus

Model Size

• IoT Base CatM Model Size PDF

Datasheets

• SIM7070_SIM7080_SIM7090 Series_CTBURST_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_CoAP(S)_Application Note_V1.03
• SIM7070_SIM7080_SIM7090 Series_Email_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_FOTA_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_FS_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_FTP(S)_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_GNSS_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_HTTP(S)_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_Linux_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_Low Power Mode_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_LwM2M_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_MQTT(S)_Application Note_V1.03
• SIM7070_SIM7080_SIM7090 Series_PING_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_SAT_Application Note_V1.02
• SIM7070_SIM7080_SIM7090 Series_SSL_Application Note_V1.00
• SIM7070_SIM7080_SIM7090 Series_TCPUDP(S)_Application Note_V1.03
• SIM7080_Series_SPEC_20200427

Softwares

Arduino

• IoT Base CatM MQTT Example
• IoT Base CatM Modbus Master Example
• IoT Base CatM Modbus Slave Example

UiFlow1

• IoT Base CatM UiFlow1 Docs

Protocol

• SIM7070_SIM7080_SIM7090 Series_AT Command Manual_V1.04