The Waveshare ESP32-S3 LoRa Development Board (HF Version) is a compact and powerful solution for IoT and LPWAN applications. Built with the ESP32-S3 dual-core processor, it supports Wi-Fi, Bluetooth 5, and long-range LoRa communication using the LR1121 RF chip. With multi-band frequency support and strong signal stability via onboard TCXO, it ensures reliable wireless connectivity. The board includes rich peripheral interfaces and sufficient onboard memory for complex applications. Its castellated module design enables easy PCB integration, making it suitable for industrial and embedded systems. Supporting LoRa, (G)FSK, and LR-FHSS modulation, it ensures flexible communication options. Ideal for smart home, telemetry, and remote monitoring systems, it offers secure and energy-efficient wireless performance. Features: ESP32-S3 dual-core LX7 processor up to 240MHz Supports Wi-Fi 2.4GHz and Bluetooth 5 (LE) Integrated LR1121 third-gen LoRa RF chip Multi-band support: Sub-GHz, S-band, 2.4GHz ISM Onboard 4MB Flash + 2MB PSRAM AES-128 encryption for secure communication TCXO oscillator for stable frequency performance Multiple interfaces: SPI, I2C, UART, I2S, ADC Useful Link: https://docs.waveshare.com/ESP32-S3-LR1121-XF Specifications: Processor: Xtensa LX7 dual-core Frequency: Up to 240MHz Memory: 512KB SRAM, 384KB ROM Flash / PSRAM: 4MB / 2MB Wireless: Wi-Fi + BLE + LoRa RF Chip: LR1121 Frequency Range (HF): 850 ~ 930MHz, 2000 ~ 2500MHz Emitting Power: -9dBm ~ 22dBm (Sub-GHz), -18dBm ~ 13dBm (ISM) Emitting Current: 111.2mA @22dBm, 49.6mA @13dBm Modulation: LoRa / (G)FSK / LR-FHSS Data Rate: LoRa: 0.091Kbps ~ 62.5Kbps, (G)FSK: 0.6Kbps ~ 300Kbps Range: 5KM (Sub-GHz), 2KM (ISM) Sensitivity: -127dBm (Sub-GHz), -111dBm (ISM) Spreading Factor: SF5 ~ SF12 Antenna Interface: IPEX-1 Connector: Castellated, 2.54mm pitch Operating Temp: -40℃ ~ 85℃ Dimensions: 41 × 21 × 3.2 mm Weight: 17g Package Includes: 1 x Waveshare ESP32-S3 LoRa Development Board Integrates LR1121 Third-generation RF Chip HF Frequency version without USB Type-C adapter board + FFC cable 1 x IPEX 1 to SMA adapter cable 1 x 2DB SMA antenna 2 x 2.4G antenna
Specifications
| Processor | Xtensa LX7 dual-core |
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| Frequency | Up to 240 MHz |
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| Memory | 512KB SRAM, 384KB ROM |
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| Flash / PSRAM | 4MB / 2MB |
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| Wireless | Wi-Fi + BLE + LoRa |
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| Shipping Weight | 0.020 kg |
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| Shipping Dimensions | 5 × 3 × 1 cm |
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