Core2021 HF Dual-Band LoRa Module, Based on LR2021 Transceiver

Waveshare 34522 - Core2021 HF Dual-Band LoRa Module, Based on LR2021 Transceiver, Supports Sub-GHz, 2.4GHz And 1.5~2.5GHz Frequency Bands, Low-power And Multi-protocol IoT LoRaWAN Module Features Based on the fourth-generation LoRa multi-band transceiver LR2021 Supports Sub-GHz (410 ~ 510 MHz / 850 ~ 930 MHz), 2.4 GHz ISM band, and 1.5 ~ 2.5 GHz licensed bands Connects to the cloud via LoRa or LoRaWAN protocol through a gateway, enabling low-power wide-area networking (LPWAN) Compatible with multiple protocols including LoRa, FLRC, FSK, BLE, and ZigBee SPI communication interface, supports mainstream MCU platforms for seamless integration and migration Suitable for IoT applications such as industrial telemetry, smart home, environmental monitoring, and remote data acquisition Comes with online development resources and manual (examples for ESP32 / Raspberry Pi / Arduino / STM32 / Raspberry Pi Pico) Specifications VersionCore2021-HF RF Specifications RF chip LR2021 Frequency range HF: 850 ~ 930MHz 2.4 GHz ISM band, 1.5 ~ 2.5 GHz licensed bands Modulation LoRa, FLRC, FSK, BLE, ZigBee Data rate LoRa: 0.091Kbps ~ 125Kbps FLRC: 0.13 Mbps ~ 2.6 Mbps FSK: 0.5 Kbps ~ 2 Mbps BLE: 125 kbps / 500 kbps / 1 Mbps / 2 Mbps Emit power -10dBm ~ 22dBm at Sub-GHz band -17dBm ~ 12dBm at ISM band Receiver sensitivity -141.5dBm at Sub-GHz band, SF=7, CR4_5, BWL=125KHz -130.5dBm at ISM band, SF=12, CR4_5, BWL=800KHz -111dBm at FLRC，260 Kbps -97dBm at BLE，2 Mbps Typical Range Sub-GHz band: 5KM ISM band: 2KM Spreadind factor SF5 ~ SF12 Electrical Characteristics Operating voltage 3.3V (maximum 3.7V) Logic Voltage 3.3V (A level converter is required for other logic levels) Module power consumption Sub-GHz band: emitting current: 105mA at 22dBm receiving current: 5.8mA at 125KHz ISM band: emitting current: 23mA at 12dBm receiving current: 6.4mA at 125KHz Hardware Specifications Communication bus SPI Crystal Oscillator XTAL 32MHz Antenna Interface IPEX-4 connector and castellated hole (additional operation required) Antenna Protection TVS protection Operating temperature -40℃ ~ 85℃ Connector castellated edge / solder holes, pitch 2.54mm Dimensions 19.00×22.00mm WIKI: docs.waveshare.com/Core2021-XF Package Content Core2021-HF x1 IPEX4 to SMA cable x1 2dBi SMA antenna x1 2.4G antenna x1 Pinout definition   Outline Dimensions