Part Number: ESP32-S3-LR1121-HF ESP32-S3 LoRa Development Board, Integrates LR1121 Third-Generation RF Chip, Supports Sub-GHz/ 2.4GH z LoRa Wireless Communication, HF Version, 850 ~ 930MHz Frequency Equipped with high-performance Xtensa 32-bit LX7 dual-core processor, up to 240MHz main frequency. Supports 2.4GH z Wi-Fi ( 802.11 b/g/n) and Bluetooth 5 (LE) to meet diverse wireless needs Built in 512KB Static RAM and 384KB ROM, with onboard 4MB Flash and 2MB PSRAM. Castellated module allows soldering direct to carrier boards Onboard rich peripheral interfaces including 4 × SPI, 2 × I2C, 3 × UART, 2 × I2S, and 2 × ADC, etc. Based on the third-generation low-power LoRa transceiver LR1121 Connects to the cloud via LoRa or LoRaWAN protocol through a gateway, enabling low-power wide-area networking (LPWAN). Supports LoRa, (G) FSK, and LR-FHSS modulation schemes, compatible with SX126X/SX127X series for easy product upgrades