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GSM GPRS CAT1 A7670G Global 4G IoT Communication Module (Gravity: DFRobot) - TEL0163
The A7670G is an integrated wireless communication module supporting 4G CAT1 with uplink speeds of 5Mbps and downlink speeds of 10Mbps. It supports multiple bands (LTE-FDD, LTE-TDD, GSM) for worldwide compatibility and works with Raspberry Pi, Arduino, and LattePanda single-board computers. The module is controlled via AT commands and includes UART and USB interfaces. It also features a built-in microphone and audio amplifier for voice calls and SMS functionality.
Package Includes
- 1 × CAT1 A7670G 4G Communication Module
- 1 × 4G Antenna
- 1 × Triple-cut Universal SIM Card Adapter
- 1 × Gravity PH2.0-4P Communication Cable
Features
- AT Command Control: Simplifies usage by eliminating the need to understand complex network protocols.
- Multi-Band Support: Compatible with LTE-FDD, LTE-TDD, and GSM bands.
- SMS Functionality: Supports MT, MO, CB, Text, and PDU modes.
- Network Protocols: Supports TCP/IP, IPV4, Multi-PDP, FTP, FTPS, HTTP, HTTPS, DNS, and more.
- Comprehensive Communication: Enables data transmission, voice calls, and SMS.
- USB Network Card: Can function as a 4G network card for single-board computers.
Specifications
| Specification | Details |
|---|---|
| Power Input | Terminal Connector: 5-12V |
| USB Input | Type-C: 5V |
| Voltage Levels | 3.3V-5V |
| Physical Interface | PH2.0-4P Gravity sequence standard |
| Audio Output Interface | PH2.0-2P |
| Frequency Band | LTE-TDD: B38/B39/B40/B41 LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66 GSM: 850/900/1800/1900MHz |
| 4G Communication Rate | CAT1: Uplink 5Mbps, Downlink 10Mbps |
| 4G Antennas | MAIN Antenna: IPEX male connector ×1 |
| Voice Microphone | ×1 |
| SIM Card Slot | Push-lock type |
| LED Indicators | Power Status: Red, Network Status: Blue |
| Operating Temperature | -40°C ~ 85°C |
| Product Dimensions | 60mm × 52mm |
Pinout
| Interface Name | Description |
|---|---|
| ANT | 4G signal antenna interface, connects to GSM antenna |
| UART | UART interface (3.3V-5V voltage level) |
| USB-Type C | USB device interface for communication and configuration |
| Power IN | External power supply (5V-12V) required when using UART |
| Audio OUT | External 8Ω 1.0W speaker output |
| SIM Card | SIM card slot |
Important Notes
- Using the PH2.0 socket for module communication requires an external 5V-12V power supply.
- Network signal indicator (Net LED):
- Steady blue: Searching for network.
- Rapid blue flashes (1/sec): Network registered.
Common AT Commands
| Command | Significance | Return Value |
|---|---|---|
| AT | AT test command | OK |
| ATE | ATE1 sets echo, ATE0 disables echo | OK |
| AT+CGMI | Query module manufacturer | OK |
| AT+CGMM | Query module model | OK |
| AT+CGSN | Query product serial number | OK |
| AT+CSUB | Query module version and chip | OK |
| AT+CGMR | Query firmware version number | OK |
| AT+IPR=9600 | Set serial port baud rate to 9600 | +IPR: OK |
| AT+IPR? | Query current serial port baud rate | +IPR: Baud Rate |
| AT+CRESET | Reset module and auto register network | OK |
| AT+CSQ | Query network signal quality | +CSQ: 14,99 OK |
| AT+CPIN? | Query SIM card status (READY if recognized) | +CPIN: READY |
| AT+COPS? | Query current operator | +COPS: OK |
| AT+CREG? | Query network registration status | +CREG: OK |
Note: AT commands are case-insensitive.
Query Result Codes and Their Meanings
| Result Code | Meaning |
|---|---|
| OK | Command executed successfully |
| CONNECT | Connection successful |
| RING | Incoming call detected |
| NO CARRIER | No connection or disconnected |
| ERROR | Invalid command or failure |
| NO DIALTONE | No dial tone or incorrect mode |
| BUSY | Currently in a call or busy server |
| NO ANSWER | Connection timed out |
Applications
- IoT Data Transmission & Remote Control: Reliable wireless communication for IoT devices.
- Mobile Device Monitoring: Track and monitor mobile devices remotely.
- Logistics & Transportation: Enhance communication and tracking in transport sectors.
- Warehousing & Theft Prevention: Monitor storage facilities and prevent theft.
- Surveillance & Positioning: Useful for security and positioning applications.
Documents
Features
- AT Command Control: Simplifies usage by eliminating the need to understand complex network protocols.
- Multi-Band Support: Compatible with LTE-FDD, LTE-TDD, and GSM bands.
- SMS Functionality: Supports MT, MO, CB, Text, and PDU modes.
- Network Protocols: Supports TCP/IP, IPV4, Multi-PDP, FTP, FTPS, HTTP, HTTPS, DNS, and more.
- Comprehensive Communication: Enables data transmission, voice calls, and SMS.
- USB Network Card: Can function as a 4G network card for single-board computers.
Specifications
| Specification | Details |
|---|---|
| Power Input | Terminal Connector: 5-12V |
| USB Input | Type-C: 5V |
| Voltage Levels | 3.3V-5V |
| Physical Interface | PH2.0-4P Gravity sequence standard |
| Audio Output Interface | PH2.0-2P |
| Frequency Band | LTE-TDD: B38/B39/B40/B41 LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28/B66 GSM: 850/900/1800/1900MHz |
| 4G Communication Rate | CAT1: Uplink 5Mbps, Downlink 10Mbps |
| 4G Antennas | MAIN Antenna: IPEX male connector ×1 |
| Voice Microphone | ×1 |
| SIM Card Slot | Push-lock type |
| LED Indicators | Power Status: Red, Network Status: Blue |
| Operating Temperature | -40°C ~ 85°C |
| Product Dimensions | 60mm × 52mm |
Pinout
| Interface Name | Description |
|---|---|
| ANT | 4G signal antenna interface, connects to GSM antenna |
| UART | UART interface (3.3V-5V voltage level) |
| USB-Type C | USB device interface for communication and configuration |
| Power IN | External power supply (5V-12V) required when using UART |
| Audio OUT | External 8Ω 1.0W speaker output |
| SIM Card | SIM card slot |
Important Notes
- Using the PH2.0 socket for module communication requires an external 5V-12V power supply.
- Network signal indicator (Net LED):
- Steady blue: Searching for network.
- Rapid blue flashes (1/sec): Network registered.
Common AT Commands
| Command | Significance | Return Value |
|---|---|---|
| AT | AT test command | OK |
| ATE | ATE1 sets echo, ATE0 disables echo | OK |
| AT+CGMI | Query module manufacturer | OK |
| AT+CGMM | Query module model | OK |
| AT+CGSN | Query product serial number | OK |
| AT+CSUB | Query module version and chip | OK |
| AT+CGMR | Query firmware version number | OK |
| AT+IPR=9600 | Set serial port baud rate to 9600 | +IPR: OK |
| AT+IPR? | Query current serial port baud rate | +IPR: Baud Rate |
| AT+CRESET | Reset module and auto register network | OK |
| AT+CSQ | Query network signal quality | +CSQ: 14,99 OK |
| AT+CPIN? | Query SIM card status (READY if recognized) | +CPIN: READY |
| AT+COPS? | Query current operator | +COPS: OK |
| AT+CREG? | Query network registration status | +CREG: OK |
Note: AT commands are case-insensitive.
Query Result Codes and Their Meanings
| Result Code | Meaning |
|---|---|
| OK | Command executed successfully |
| CONNECT | Connection successful |
| RING | Incoming call detected |
| NO CARRIER | No connection or disconnected |
| ERROR | Invalid command or failure |
| NO DIALTONE | No dial tone or incorrect mode |
| BUSY | Currently in a call or busy server |
| NO ANSWER | Connection timed out |
Applications
- IoT Data Transmission & Remote Control: Reliable wireless communication for IoT devices.
- Mobile Device Monitoring: Track and monitor mobile devices remotely.
- Logistics & Transportation: Enhance communication and tracking in transport sectors.
- Warehousing & Theft Prevention: Monitor storage facilities and prevent theft.
- Surveillance & Positioning: Useful for security and positioning applications.