Feature Highlights: 1. Ultra-Long Range Communication – Supports stable communication up to 15 km. Maintains constant power output (+20 dBm / 100 mW) even with voltage fluctuations. 2. High Sensitivity & Reliable Signal – Features -148 dBm receiving sensitivity and half-duplex SPI communication for clear, long-distance data transmission. 3. Programmable & Versatile Modulation – Bit rate adjustable up to 300 kbps. Compatible with GFSK, MSK, GMSK, LoRa, and OOK modulation methods, with a 127 dB RSSI dynamic range. 4. Smart Signal Processing – Includes automatic signal detection, CAD mode, high-speed AFC, and a packet engine supporting up to 256 bytes. Compact dual‑row stamp‑hole patch design. 5. Robust Shielding & Antenna Options – Equipped with a shielded enclosure and compatible with spring antenna (RA‑01) or external antenna (RA‑02). Note: Minor variations in appearance, color, or printed text may occur between batches, which do not affect performance. Product Details: This development board module is designed for SX1278‑based LoRa spread spectrum wireless communication. It ensures stable, long‑range connectivity with high sensitivity and flexible configuration options. Ideal for IoT, remote sensing, and wireless control applications, the module is easy to integrate and built for reliable performance in varied environments. Specifications: - Model: RA‑02 Development Board (with soldering pins) - Product Type: Board with base plate - Communication Interface: UART - Supply Voltage: 3.3V - Operating Current: 0.2A - Color: As shown - Material: PCB Package Includes: 1 × RA‑02 Development Board Module (with soldering pins) Only the listed items are included. Other accessories are not provided. Note: Slight color differences may appear due to lighting or display settings. Dimensions may vary within ±1‑3 cm.