7Semi EG800AK LTE 4G Cat-1 bis GNSS Mini Industrial Modem USB-C

7Semi LTE Communication module

7Semi LTE Communication module

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Overview

The 7Semi EG800AK-CN LTE Development Board is a compact cellular communication platform built around the Quectel EG800AK-CN LTE Cat 1 module. It enables embedded systems to connect to LTE networks for wireless data transmission, cloud communication, remote monitoring, and IoT deployments where Wi-Fi or wired connectivity is unavailable. Designed for rapid prototyping and product development, the board exposes the module's UART interface through easy-to-use headers, allowing seamless integration with popular platforms such as ESP32, STM32, Arduino, Raspberry Pi, and other microcontrollers. The onboard USB Type-C connector simplifies power and debugging during development, while the integrated SIM card holder and LTE antenna interface provide everything needed to get started with cellular connectivity. Whether you're building a remote sensor node, industrial monitoring system, smart agriculture solution, asset tracking device, or cloud-connected embedded product, the EG800AK-CN offers a reliable and straightforward way to add LTE communication to your project.

Technical Specification

Features

• Add LTE connectivity to embedded and IoT devices
• Easy UART interface for microcontroller integration
• Compact footprint for space-constrained designs
• Supports remote monitoring and telemetry applications
• LTE Cat 1bis communication with nationwide cellular coverage
• Compatible with ESP32, STM32, RP2040, and similar platforms
• Supports DFOTA for remote firmware updates
• Supports MQTT, HTTP, HTTPS, TCP, and UDP protocols
• External LTE antenna connection for flexible deployment
• Suitable for industrial and commercial IoT applications

Pinouts

Hardware connection

• Connect the LTE antenna to the MAIN connector.
• Connect VIN → 3.3V and GND → GND.
• Connect TX (Module) → RX (USB-UART).
• Connect RX (Module) → TX (USB-UART).
• Connect the USB-to-UART converter to your PC.

Hardware

• Connect the TXD pin of the EG800AK-CN PICO module to the RX (D0) pin of the Arduino UNO.
• Connect the RXD pin of the EG800AK-CN PICO module to the TX (D1) pin of the Arduino UNO through a 3.3V logic level shifter.
• Connect the GND pin of the EG800AK-CN PICO module to the GND pin of the Arduino UNO.
• Connect the LTE antenna to the antenna connector on the EG800AK-CN PICO module.
• Power the EG800AK-CN PICO module and Arduino UNO before opening the Arduino IDE Serial Monitor.

Arduino UART AT Command Test

• This example shows how to communicate with the 7Semi EG800AK-CN PICO LTE module using an Arduino UNO. The Arduino works as a USB-to-UART bridge, allowing AT commands typed in the Arduino IDE Serial Monitor to be sent directly to the EG800 module.

#include <SoftwareSerial.h>

SoftwareSerial eg800(2, 3);   // RX, TX

void setup()
{
  Serial.begin(115200);      // Serial Monitor
  eg800.begin(115200);       // EG800 Module

  Serial.println("EG800 Ready");
  Serial.println("Type AT commands below...");
}

void loop()
{
  // EG800 -> Serial Monitor
  while (eg800.available())
  {
    Serial.write(eg800.read());
  }

  // Serial Monitor -> EG800
  while (Serial.available())
  {
    eg800.write(Serial.read());
  }
}

Alert/Note

AT Commands you can try to test the module

AT Commands you can try to test the module

Mechanical

Dimensions: L=54mm W=18mm H=8mm

Downloads

Frequently Asked Questions