The A7670G is an integrated wireless communication module supporting 4G CAT1 with uplink speeds of 5Mbps and downlink speeds of 10Mbps. It is compatible with multiple bands (LTE-FDD, LTE-TDD, GSM) for global use and is designed to work with Raspberry Pi, Arduino, and LattePanda single-board computers. The module supports various network protocols, controlled via AT commands, and includes UART and USB interfaces for flexible connectivity. Additionally, it has a built-in microphone and audio power amplifier for voice calls and SMS functionality.

 

Features

• AT Command Control: Simplifies usage by eliminating the need for understanding 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 Capabilities: Enables data transmission, voice calls, and SMS.
• USB Network Card: Can function as a 4G network card for single-board computers.

 

Specifications

• Terminal Connector: 5-12V
• Type-C: 5V

• Voltage Level: 3.3V-5V
• Physical Interface: PH2.0-4P Gravity sequence standard

Audio Output Interface:

• Type: PH2.0-2P

Frequency Band Applicable Regions:

• Global Support:
  • 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 speed 5Mbps, Downlink speed 10Mbps

4G Antennas:

• MAIN Antenna: IPEX male connector ×1

Voice Microphone: ×1

SIM Card Slot:

• Type: Push-lock

LED Indicators:

• Power Status: Red
• Network Status: Blue

Operating Temperature:

• Range: -40°C ~ 85°C

Product Dimensions:

• Size: 60mm×52mm

 

Pinout:

Interface Name	Description
ANT	The 4G signal antenna interface, connects to GSM antenna
UART	UART interface (interface voltage level 3.3V-5V)
USB-Type C	USB device interface, used for communication and parameter configuration with a computer
Power IN	External power supply required when using the UART interface (5V-12V)
Audio OUT	External 8Ω 1.0W speaker
SIM Card	Insert a SIM card

Important Notes:

1. When using the PH2.0 socket for module communication, an external power supply of 5V-12V is required.

2.Net - Network signal indicator:

• Steady blue light: Searching for a network.
• Rapid blue flashes (once every 1 second): Network registration completed

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 the module's temporary hardware serial port baud rate to 9600	+IPR: OK
AT+IPR?	Query the current hardware serial port baud rate	+IPR: Baud Rate
AT+CRESET	Reset the module (the module will restart and automatically register on the network)	OK
AT+CSQ	Query network signal quality, returns signal value	+CSQ: 14,99 OK
AT+CPIN?	Query SIM card status, returns READY if the SIM card is recognized	+CPIN: READY
AT+COPS?	Query the current operator, will return operator information after normal connection	+COPS: OK
AT+CREG?	Query network registration status	+CREG: OK

Note: This AT command is case-insensitive

Querying Result Codes and Their Meanings

Detailed Result Code	Meaning
OK	Command executed successfully with no errors
CONNECT	Connection successful
RING	Ring detected (incoming call received)
NO CARRIER	No established connection or connection disconnected
ERROR	Invalid command or command failed
NO DIALTONE	No dial tone, unable to dial, incorrect mode
BUSY	Currently in a call or server is busy
NO ANSWER	Connection timed out

 

Applications

• IoT Data Transmission and Remote Control: Ideal for various IoT applications requiring reliable data communication.
• Mobile Device Monitoring: Useful for keeping track of mobile devices.
• Logistics and Transportation: Enhances tracking and communication in transportation sectors.
• Warehousing and Theft Prevention: Aids in monitoring and preventing theft in storage facilities.
• Surveillance and Positioning: Suitable for surveillance systems and positioning applications.