Ultra-Long Communication Distance: Up to 15 km Constant RF Power Output: +20 dBm (100 mW) High Sensitivity: -148 dBm Half-Duplex SPI Communication Programmable Bit Rate: Up to 300 kbps Modulation Support: FSK, GFSK, MSK, GMSK, LoRa, OOK RSSI Dynamic Range: 127 dB Automatic RF Signal Detection CAD Mode and High-Speed AFC Packet Engine with CRC Maximum Packet Size: 256 bytes Compact Dual-Row Stamp Hole Patch Package Shielded Metal Enclosure Spring Antenna (RA-01) or IPX External Antenna (RA-02) Note: Slight variations in appearance, color, or printed markings may occur between batches. These do not affect performance or specifications. RA-02 Development Board (with soldering pins) Product Type: With Base Plate Communication Interface: UART Power Supply Voltage: 3.3 V Power Supply Current: 0.2 A Color: As shown Material: PCB Package Includes: 1 × RA-02 Development Board Module (with soldering pins) Note: Colors may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.