4G GSM Module SIM A7670C with RS232 Interface – LTE and GPS Support for Arduino by ADIY

The SIM7670C 4G GSM Module with RS232 interface (ADIY) is a powerful and versatile communication module that supports 4G LTE, 3G, and 2G GSM networks. With the RS232 interface, it is ideal for high-speed wireless data communication, remote monitoring, IoT applications, and more. This module offers multi-network support, including GSM, GPRS, EDGE, WCDMA, and LTE technologies, and facilitates easy integration into embedded systems and microcontrollers.

Key Features:

• 4G LTE, 3G, and 2G Support: Supports GSM, GPRS, EDGE, WCDMA, and LTE networks (Bands 1/3/5/7/8/20/28)
• RS232 Communication Interface: Easy integration with microcontrollers and embedded systems through RS232 interface
• Low Power Consumption: Designed for battery-powered applications
• Multiple Communication Protocols: Supports voice, SMS, and high-speed data transfer (up to 100Mbps download and 50Mbps upload)
• Built-in Antenna: Provides stable connectivity for better signal reception
• Easy Integration: Compatible with Arduino, Raspberry Pi, and other microcontroller platforms

Applications:

• IoT (Internet of Things) projects
• Remote data logging and monitoring systems
• Voice communication and SMS-based control systems
• Vehicle tracking and GPS-based systems
• Wireless data transmission in industrial applications

Whether you're developing a 4G-based IoT solution or integrating GSM communication into your projects, the SIM7670C module with RS232 provides high-speed, reliable connectivity for a wide range of applications.

AT Command Support:

• AT: Test communication
• ATI: Get module information
• AT+CSQ: Check signal quality
• AT+CGMI: Get manufacturer
• AT+CGMM: Get model
• AT+CGATT?: Check GPRS attachment status
• AT+CREG?: Check network registration
• AT+CMGF=1: Set SMS text mode
• AT+CMGS="": Send SMS
• ATD;: Dial a phone number
• ATH: Hang up call
• AT+CGDCONT=1,"IP","": Set APN for GPRS
• AT+CGACT=1,1: Activate data connection

Basic AT Commands:

• AT: Test if the module is responsive. Expected response: OK
• ATI: Get module info (e.g., model, firmware version). Expected response: Module details
• AT+CSQ: Check signal strength. Expected response: +CSQ: ,
• AT+CREG?: Check if the device is registered on the network. Expected response: +CREG: 0,1(registered) or+CREG: 0,5(not registered)
• AT+CMGF=1: Set SMS mode to text. Expected response:OK
• AT+CMGS="": Send SMS to a specified phone number. Expected response: +CMGS:
• ATD;: Dial a number. Expected response: OK
• ATH: End the call. Expected response: OK