Microprocessor: ESP32-C3FN4 (RISC-V architecture 32-bit, main frequency up to 160 MHz) Integrated WiFi network connection, onboard Wi-Fi, IPEX socket. LoRaWAN 1.0.2 support; Ultra low power design, 10uA in deep sleep; 1.27 stamp edge design for SMT; Good impendence matching and long communication