The SX1278 LoRa spread spectrum wireless module uses the Ra-02 LoRa series module. The interface is compatible with the NRF24L01 module. For long-distance data transmission, the NRF24L01 can be directly replaced by modifying the program without changing the hardware design. The RF chip SX1278 in the LoRa series module (Ra-01/Ra-02) utilizes the LoRa™ long-range modem for ultra-long-distance spread spectrum communication, offering strong anti-interference capabilities and low power consumption. Featuring SEMTECH's LoRa™ patented modulation technology, the SX1278 provides high sensitivity of over -148dBm, a power output of +20dBm, extended transmission range, and high reliability. Compared with traditional modulation technologies, LoRa™ technology offers significant advantages in interference rejection and signal selectivity, effectively addressing the limitations of traditional designs that struggle to balance distance, interference resistance, and power consumption. Ra-01 and Ra-02 operate at 433MHz, suitable for regions using the 433MHz frequency band, including China and Southeast Asia. SX1278 features: - LoRa™ spread spectrum modulation technology - Ultra-long communication distance up to 15km - +20dBm (100mW) constant RF power output across voltage variations - High sensitivity down to -148dBm - Half-duplex SPI communication - Programmable bit rate up to 300kbps - Supports FSK, GFSK, MSK, GMSK, LoRa™, and OOK modulation - 127dB RSSI dynamic range - Automatic RF signal detection, CAD mode, and high-speed AFC - Built-in CRC with data packet engine supporting up to 256 bytes - Compact dual-row stamp hole patch package - Includes shielding shell - IPEX external antenna interface (antenna not included) Note: Product appearance, color, and printed text may vary between batches; these variations do not affect functionality. Color: Blue Material: PCB Package Contents: 1 x Module