How to Use 4G SIM7600G-H Module: Examples, Pinouts, and Specs

The 4G SIM7600G-H Module is a high-performance LTE communication module designed for high-speed mobile data transmission. Manufactured by SIMCom, this module supports 4G LTE, 3G, and 2G networks, making it a versatile solution for a wide range of applications. It is particularly well-suited for Internet of Things (IoT) applications, such as smart metering, remote monitoring, vehicle tracking, and industrial automation. The module also supports various communication protocols, including TCP/IP, HTTP, FTP, and MQTT, enabling seamless integration into modern IoT ecosystems.

With its compact design, low power consumption, and robust connectivity features, the SIM7600G-H module is an excellent choice for developers and engineers looking to implement reliable wireless communication in their projects.

The following table outlines the key technical specifications of the 4G SIM7600G-H Module:

The SIM7600G-H module has multiple pins for interfacing with external devices. Below is a summary of the key pins and their functions:

To use the SIM7600G-H module with an Arduino UNO, follow these steps:

1. Power Supply: Ensure the module is powered with a stable 3.8V supply. Use a DC-DC converter or a dedicated power supply module to step down from 5V to 3.8V.
2. UART Connection: Connect the module's TXD pin to the Arduino's RX pin and the module's RXD pin to the Arduino's TX pin. Use a logic level shifter if necessary to match voltage levels.
3. SIM Card: Insert a valid SIM card into the module's SIM card slot.
4. Antenna: Attach a 4G LTE antenna to the module for optimal signal reception.
5. Power On: Pull the PWRKEY pin low for at least 1 second to power on the module.
6. Communication: Use the Arduino's Serial Monitor or a software library to send AT commands to the module.

The following example demonstrates how to send an SMS using the SIM7600G-H module:

#include <SoftwareSerial.h>

// Define RX and TX pins for SoftwareSerial
SoftwareSerial sim7600(7, 8); // RX = Pin 7, TX = Pin 8

void setup() {
  Serial.begin(9600);          // Initialize Serial Monitor
  sim7600.begin(9600);         // Initialize SIM7600 UART communication

  Serial.println("Initializing SIM7600G-H Module...");
  delay(1000);

  // Send AT command to check module status
  sim7600.println("AT");
  delay(1000);
  while (sim7600.available()) {
    Serial.write(sim7600.read()); // Print module response to Serial Monitor
  }

  // Set SMS text mode
  sim7600.println("AT+CMGF=1"); // Set SMS mode to text
  delay(1000);

  // Send SMS
  sim7600.println("AT+CMGS=\"+1234567890\""); // Replace with recipient's phone number
  delay(1000);
  sim7600.println("Hello from SIM7600G-H!");  // SMS content
  delay(1000);
  sim7600.write(26); // Send Ctrl+Z to indicate end of message
  delay(5000);

  Serial.println("SMS sent!");
}

void loop() {
  // No actions in loop
}

• Use a stable power supply to avoid unexpected resets or malfunctions.
• Ensure proper grounding between the module and the Arduino.
• Use a logic level shifter if the Arduino operates at 5V logic levels.
• Place the antenna in an open area for better signal reception.
• Avoid sending AT commands too quickly; allow sufficient delay between commands.

1. Can the SIM7600G-H module be used for voice calls?

   • Yes, the module supports voice calls using AT commands.

2. What is the maximum data rate supported by the module?

   • The module supports up to 150 Mbps download and 50 Mbps upload on LTE networks.

3. Does the module support GPS?

   • Yes, the SIM7600G-H module includes GNSS functionality for GPS, GLONASS, and BeiDou.

4. Can I use the module with a 5V microcontroller?

   • Yes, but you must use a logic level shifter to interface the 3.3V UART pins with the 5V microcontroller.

This documentation provides a comprehensive guide to using the 4G SIM7600G-H Module. For further assistance, refer to the official SIMCom datasheet or contact technical support.