Description:Power supply: DC1.8-3.7V(3.3V)Chip: SX1278 Frequency: 433Mhzoperating temperature: -40~+85°CFeatures: • LoRa ™ spread spectrum modulation technology• Super-far-distance communication 15KM• +20dBm-100mW voltage constant when the RF power output• High sensitivity: low to -148dBm• Half duplex SPI communication• Programmable bitrates up to 300kbps• Supports FSK, GFSK, MSK, GMSK, LoRa ™ and OOK modulation• 127dB RSSI dynamic range• Automatic RF signal detection, CAD models and ultra high-speed AFC• With the CRC, up to 256 bytes of packet engine• Small double stamp hole size SMD package• Shielding shell• IPEX external antenna (Ra-02) Package included: 3 x SX1278 LoRa Ra-02 Spread Spectrum Wireless Module