LoRa series modules (Ra-01 / Ra-02) are designed using advanced science and technology. This series of modules primarily adopts the SX1278 RF chip with LoRa long-range modem technology for long-distance spread spectrum communication. The module features strong interference resistance and minimizes current consumption. Utilizing LoRa modulation technology, it offers high sensitivity up to -148 dBm and +20 dBm power output, enabling long transmission distance and high reliability. Compared to traditional modulation techniques, LoRa provides significant advantages in blocking and selectivity, effectively balancing long range, anti-interference performance, and power consumption. The Ra-01 and Ra-02 operate at a frequency of 433 MHz, designed for regions using this band, including China and Southeast Asia. Module Features: - LoRa spread spectrum modulation technology - Long communication distance up to 15 km - +20 dBm (100 mW) constant RF power output - High sensitivity, down to -148 dBm - Half-duplex SPI communication - Programmable bit rate up to 300 kbps - Supports GFSK, MSK, GMSK, and LoRa modulation modes - 127 dB RSSI dynamic range - RF signal detection, automatic CAD mode, and fast AFC - Packet engine with up to 256 bytes payload - Compact size with double-row stamp hole patch encapsulation - Shielding shell included - Spring antenna (Ra-01) or external antenna (Ra-02) - Minor variations in printed markings may occur between batches, but do not affect functionality Color: As shown Material: PCB Package Contents: 1 x Module Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement tolerances are within acceptable limits.