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CONTENTS

COM GSM

SKU:M031-D

Description

COM GSM is a stackable 2G communication module, with the SIM800C communication module built-in. The working frequency of COM GSM is GSM/GPRS 850/900/1800/1900MHz,and it can transmit SMS and data information with low power consumption. The module has a DC power input and can provide 5V-12V power supply through an external power supply. In order to facilitate the user to configure the pins, the DIP switch is used to set the pins. This module is especially suitable for remote meter reading, smart wearables, smart parking, municipal management and other IoT industries with ultra-low power consumption and small size as the core requirements.

Notice

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.

Product Features

  • Stackable design

  • Support SMS text and data transmission

  • Independent external power supply

  • AT command control

  • SIM card type: MicroSIM

  • Status signal: two LED indicators (power/network status)

  • Power supply voltage: 3.4-4.4V

  • Typical power consumption in sleep mode: 0.88mA

  • External antenna: SMA antenna 2.5dBi

  • Serial communication: UART 115200bps

  • Operating temperature range: -40°C to +85°C

  • Frequency band:

    • Quad-band 850/900/1800/1900MHz
    • GPRS multi-slot class 12/10
    • GPRS mobile station class B

  • data transmission:

    • PRS class 12: Maximum 85.6 kbps (uplink/downlink rate)
      • Support PBCCH (Packet Broadcast Control Channel)
      • Coding scheme: CS 1, 2, 3, 4
      • Integrated TCP/IP TCP/IP、UDP、HTTP、FTP protocol
      • Support USSD (Unstructured Supplementary Services Data)

Include

  • 1x COM GSM module
  • 1x SMA antenna

Applications

  • Remote meter reading system
  • Automatic Web Spider SMS-notifier
  • Wireless communication

Specification

Resources Parameter
Frequency band GSM/GPRS 850/900/1800/1900MHz
Network protocol TCP/IP/UDP/FTP/HTTP etc.
Communication UART 115200bps
Antenna Gain 2.5dB 1880-1900MHZ/2320-2370MHZ 2575-2635MHZ
DC interface specifications 5.5mm
Net Weight 40g
Gross weight 75g
Module 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.

EasyLoader

EasyLoader is a concise and fast program writer, which has a built-in case program related to the product. It can be burned to the main control by simple steps to perform a series of function verification.

Download Windows Version Easyloader Download MacOS Version Easyloader

Description:
Power on to test signal quality and network access status

PinMap

M5Stack TX(GPIO0/13/17) RX(GPIO5/15/16) 5V GND
COM GSM 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

MBUS PinMap

Schematic

Example

Arduino

To get complete code, please click here