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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br />
<br />
== Summary ==<br />
The A7670E Cat-1 HAT is an LTE module with a 40-pin GPIO connector for the Raspberry Pi series. It supports LTE-TDD, LTE-FDD, GSM, GPRS and EDGE with up to 10 Mbps downlink and 5 Mbps uplink.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL20049 WSAL20049 – A7670E LTE Cat-1 HAT for Raspberry Pi, Multi Band, 2G GSM / GPRS, LBS, for Europe, Southeast Asia, West Asia, Africa, China, South Korea]<br />
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== Technical overview ==<br />
* Supported protocols: TCP/IP, HTTP(s), MQTT(s), FTP(s) and SSL.<br />
* LBS positioning via the mobile network; SMS types supported: MT, MO, CB, Text, PDU.<br />
* Onboard USB interface for testing AT commands and network communication.<br />
* 3.5 mm audio jack for audio input/output, phone calls and TTS playback.<br />
* Operating voltage configurable to 3.3 V or 5 V via jumper; power supply is 5 V.<br />
* Dimensions: 65 × 30.5 mm; operating temperature -30 °C to 80 °C, storage temperature -45 °C to 90 °C.<br />
* SIM card slot supports 1.8 V/3 V SIM cards.<br />
* Two LEDs for monitoring operational status.<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
sudo raspi-config<br />
sudo reboot<br />
sudo apt-get install minicom<br />
sudo ls -l /dev/serial0<br />
sudo minicom -D /dev/ttyS0<br />
sudo ls /dev/ttyUSB*<br />
sudo minicom -D /dev/ttyUSB1<br />
AT+DIALMODE=0<br />
AT$MYCONFIG="usbnetmode",0<br />
ifconfig<br />
sudo dhclient -v usb0<br />
sudo ping -I usb0 www.google.com<br />
sudo route add -net 0.0.0.0 usb0<br />
AT+DIALMODE=1<br />
</syntaxhighlight><br />
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== Notes and version constraints ==<br />
* Exact pinouts and jumper settings (area B, 3V3→PWR) must be verified before setup.<br />
* Port names may vary by system (e.g., ttyS0, ttyUSB1, ttyTHS1); check the actual port using ls.<br />
* AT command compatibility with the SIM7600 series is only 'mostly compatible'; individual commands should be tested.<br />
* FTP examples require a self-hosted FTP server.<br />
* If the network is unavailable, try configuring DNS via route add.<br />
* TTS supports Chinese and English texts; other languages are not specified.<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/A7670E_Cat-1_HAT A7670E Cat-1 HAT - Waveshare Wiki]<br />
* Source revision: 68778<br />
* Captured: 2026-09-02T03:08:54+00:00<br />
* SHA-256: <code>cb80dcf6d6f09a869b6f3de47acc1131e7897fb34445d983398fe82b64eedd16</code></div>JWTechPublisher