SIMCOM A7670SA/A7672SA USB Dongle LTE CAT1 Module User Manual

1. Introduction

This manual provides detailed instructions for the setup, operation, and maintenance of the SIMCOM A7670SA and A7672SA USB Dongle LTE CAT1 Module. This product is a module development board designed to facilitate wireless communication, supporting LTE CAT1, 4G, 2G, Voice, Bluetooth (BT), and Global Navigation Satellite System (GNSS) functionalities.

Please note: This product is a module development board, which only includes the module and does not include a SIM phone card. A compatible Micro SIM card must be purchased separately.

The A7670 series modules are designed for various regions, with suffixes indicating their applicability:

• **G**: Global
• **E**: Europe/Middle East/Africa
• **NA**: North America
• **C**: China
• **JC**: Japan
• **SA**: New Zealand/Australia/South America (This product is designed for SA regions)

2. Package Contents

Before proceeding with the setup, please ensure all components are present:

• USB Dongle Board (CC-USB-A7670SA-Dongle)
• SIMCOM A7670SA or A7672SA Module (pre-installed on the dongle board)
• FPC Antenna

3. Setup Instructions

3.1. SIM Card Installation

1. Locate the Micro SIM card slot on the dongle board.
2. Carefully insert your Micro SIM card into the slot until it clicks into place. Ensure the card is oriented correctly as indicated on the board.

3.2. FPC Antenna Connection

1. Identify the antenna connector on the dongle board (labeled MANT for Main Antenna, and AUX/GPS for Auxiliary/GPS antenna if applicable).
2. Connect the FPC antenna to the appropriate connector. Ensure a secure connection.

3.3. Power Connection

1. Connect the USB dongle to a standard USB 2.0 port on your computer or a compatible power source.
2. The module supports a power input range of 5V to 18V (VIN).
3. The device is designed for auto power-on functionality.

4. Operating Instructions

4.1. Driver Installation

Upon connecting the USB dongle to your computer, the operating system may automatically install necessary drivers. If not, drivers for Windows, Linux, and Android operating systems are available. Refer to the SIMCOM official website or contact technical support for the latest drivers.

4.2. Communication Modes

The module supports two primary communication modes:

• **USB**: For data communication and AT command interface via the USB port.
• **UART**: For serial communication, typically used for embedded systems and microcontrollers.

4.3. Network Connectivity

Once powered on and drivers are installed, the module will attempt to connect to the cellular network. The LED indicator will provide status feedback (Power/Network light). Ensure your SIM card is active and has a valid data plan for the region.

4.4. AT Commands

The module supports a comprehensive set of AT commands for configuration and control. These commands are compatible with SIM7500/SIM7600 series modules. Refer to the SIMCOM AT Command Manual for detailed usage.

5. Specifications

The following table outlines the key specifications of the SIMCOM A7670SA/A7672SA USB Dongle LTE CAT1 Module:

Module dimensions:

For detailed comparison of A7670 series modules (C, E, SA versions), refer to the table below:

6. Maintenance

• **Environmental Conditions**: Operate the module within the specified temperature range of -40℃ to 85℃. Avoid extreme humidity and direct exposure to water.
• **Cleaning**: Use a dry, soft cloth to clean the module. Do not use liquid cleaners or solvents.
• **Firmware Updates**: Periodically check for firmware updates from SIMCOM to ensure optimal performance and security. Updates are typically performed via USB/FOTA (Firmware Over-The-Air).
• **Storage**: When not in use, store the module in a dry, anti-static environment.

7. Troubleshooting

• **No Power/LED Indicator Off**: Ensure the USB dongle is securely connected to a powered USB port or a compatible power source (5V-18V). Verify the power source is functional.
• **No Network Connection**:
  • Check if the Micro SIM card is correctly inserted and activated.
  • Ensure the FPC antenna is securely connected.
  • Verify that the module's regional version (SA for this product) is compatible with your local network bands.
  • Confirm that your operating system has the correct drivers installed.
• **Data Transfer Issues**:
  • Check network signal strength.
  • Verify APN settings if configured manually.
  • Ensure no software conflicts are present on the host device.
• **Module Not Recognized by OS**:
  • Reinstall the USB drivers.
  • Try connecting to a different USB port or computer.

8. User Tips

• **Regional Compatibility**: Always double-check that the module's regional variant (SA for Australia/South America) matches your intended deployment location to ensure full network compatibility.
• **Driver Management**: For Windows users, ensure you have the latest official SIMCOM drivers installed for stable operation. For Linux and Android, proper kernel modules or configurations might be needed.
• **Antenna Placement**: For optimal signal reception, ensure the FPC antenna is placed in an open area, away from metal obstructions.
• **Power Supply**: While the module supports a wide voltage range, using a stable 5V USB power source is generally recommended for development and testing.

9. Frequently Asked Questions (FAQ)

Q: Is the product shown in the pictures the actual product?

A: Yes, all product pictures are of the real product.

Q: What is the delivery time?

A: Products can be dispatched immediately if in stock upon payment. For customized or out-of-stock items, delivery time will be provided by sales based on the production schedule.

Q: If the stock quantity is insufficient, what should I do?

A: Contact us or leave a message; we will reply and check the exact stock within 12 hours. For bulk orders, the lead time is typically around 2 weeks.

Q: How can I get a commercial invoice for company finance?

A: Contact us or leave a message with your billing address, and we will send a PDF version.

Q: How can I customize the product?

A: Contact us or leave a message with your detailed requirements, and we will consult with our engineers to assess feasibility.

10. Warranty and Support

This product is provided by MUZ Electronic Store. We offer comprehensive technical support and excellent after-sales service to ensure your satisfaction. All products are 100% new and original.

For any technical assistance, troubleshooting, or inquiries regarding your SIMCOM A7670SA/A7672SA USB Dongle LTE CAT1 Module, please contact the seller directly through the platform where you made your purchase.

11. Product Overview Video

Watch this video for a visual overview of various PCB and module products, including the type of module used in this dongle.