M5stack Gsm Module Sim800l Stackable Iot Development Board For Arduino Esp32 With Mic & 3.5mm Headphone Jack

Description: M5Stack GSM Module GPRS Board SIM800L Development Board for Arduino ESP32 Electronic PCB DIY The default use of serial port 2, you can also manually jump to other IO port. GPIO-TXD GPIO17-RXD GPIO5-RST Package included: 1 x M5Stack GSM Module