Feature: 1. Wide Frequency Band Range: Support global unlicensed ISM 433, 470, 868, 915MHz frequency band, wide covering national regions, alleviating the burden of frequency band licensing, allowing you to use it with more confidence. 2. Long Distance: Under ideal environment, the communicate distance can up to 5km, which adapts to the long distance communicate demand. In addition, there is a relay function to further extend the communicate distance, which is ideal for use in large scale networks. 3. Strong Environmental Adaptability: Wireless module supports LBT function, which will listen to the channel environmental noise before sending, this design can significantly improve the success rate of communicate in harsh environments. 4. High Sensitivity: The for RPi LoRa expansion board has a reception sensitivity of up to ‑147dBm, which ensures that data can be received even under extremely low signal strength, significantly improving the reliability of wireless communicate. 5. Low Power Consumption: Wake on air support and low power consumption make this LoRa module more suitable for battery powered applications, which effectively reduces power consumption and extends the usage time of the device. Specification: Item Type: Wireless Module Material: PCB Maximum Transmit Power: 22.0dBm (10, 13, 17, 22dBm Software Selectable) Transmit Length: 240Byte (32, 64, 128, 240Byte Software Selectable) Buffer Capacity: 1000Byte Operating Frequency Band: 410.125-493.125MHz or 850.125-930.125MHz Receiver Sensitivity: -147dBm at 0.3Kbps Air Rate Air Rate: 0.3K-62.5Kbps (Software Selectable) Communicate Interface: UART Communicate Distance: 5KM (clear and open area, antenna gain 5dBi, antenna height 2.5m/8.2ft, air rate 2.4kbps) Power Supply Voltage: 5V Logic Level: 3.3V Features: 1. Support global unlicensed ISM 433, 470, 868, 915MHz frequency bands; 2. Support air wake up, low power consumption for battery powered applications; 3. Support point to point transmission, broadcast transmission, channel monitoring, multi level relay for long distance communicate; 4. Support RSSI signal strength indication function for evaluating signal quality and improving communicate network; 5. Support LBT function, listen to channel environment noise before sending, significantly improve the module's communicate success rate in harsh environments; 6. LoRa spreading technology, up to 84 selectable channels; 7. Support air wake up, online configuration, carrier sensing, automatic relay, communicate key, low power sleep; 8. Ideal communicate distance up to 5KM in ideal environment.. Package List: 1 x Wireless Module1 x Antenna 5 x Screws 3 x Nuts 1 x Data Cable 1 x User Manual