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Ai-Thinker Pudding A9 GSM+GPRS Modul
Ai Thinker A9 GSM GPRS development board
https://www.instructables.com/Solar-Weather-Station-With-ESP32-SIM800L-ESP8266-S/
Ai-Thinker Pudding A9 GSM+GPRS Modul
Ai Thinker A9 GSM GPRS development board
https://www.instructables.com/Solar-Weather-Station-With-ESP32-SIM800L-ESP8266-S/