RF chip SX1278 mainly uses LoRa ™ remote modem for ultra-long distance spread Letter, strong anti-interference, to minimize current consumption. With the help of SEMTECH's LoRa ™  Lee modulation technology, SX1278 has a high sensitivity of more than -148dBm, +20dBm power output , Transmission distance, high reliability. At the same time, relative to the traditional modulation technology, LoRa ™ modulation technology in the anti- Blocking and selection also has a clear advantage to solve the traditional design can not take into account the distance, Anti-jamming and power consumption problems. Ra-01, Ra-02 operating frequency 433M, mainly for 433M network  Section of the region, including China and Southeast Asia.

Ra-01 is based on SEMTECH SX1278 wireless transparent transmission module (transceiver),the use of advanced LoRa spread spectrum technology, communication distance of 10,000 meters, super error correction, anti-interference ability, with air wake-up function (ultra-low power Consumption). Can be no dead angle covering thousands of people in the district environment, especially for meter reading, smart home, burglar alarm and other equipment.

Module characteristics:

• LoRa ™ spread spectrum modulation technology
• Ultra-far communication distance of 15KM
• + 20dBm-100mW constant RF power output when voltage changes
• High sensitivity: down to -148dBm
• Half-duplex SPI communication
• Programmable bit rate up to 300kbps
• Supports FSK, GFSK, MSK, GMSK, LoRa ™ and OOK modulation modes
• 127dB RSSI dynamic range
• Automatic RF signal detection, CAD mode and ultra-high speed AFC
• Packets with CRC up to 256 bytes
• Small volume double row stamp hole patch package
• With shielded case
• Spring antenna (Ra-01) or IPEX external antenna (Ra-02)