1. LPWAN technology, point-to-point wireless transparent transmission 2. Long-distance wireless data transmission module has the characteristics of ultra-large capacity, high speed, wide coverage and low cost. 3. Provides a universal AT interface based on UART and flexible parameter configuration capabilities. Users can complete the configuration of various parameters such as module transmit power, operating frequency, rate, and operating mode according to application requirements, and quickly realize wireless transmission and reception of data. 4. Standards & algorithms & chips, technology-leading large-capacity narrowband wireless IoT 5. Creatively apply mMIMO to narrowband IoT transmission, which has the advantages of large capacity, high speed, strong coverage and low cost to solve the low-cost and massive access requirements of the IoT. 1. Material: PCBA+Metal 2. Working frequency: 470MHz~510MHz 3. Modulation : DPFSK 4. Rate range: 0.44Kbps~85.106Kbps 5.Receive sensitivity: -129dBm@1.8Kbps 6.PMU: RockChiD RK809-5 7. Transmit power: 20dBm 8.Wi-Fi+Bluetooth: Wi-Fi5+BT5.0, BLE(AP6256) 9. Working current: transmitting current Less than 120mA@20dBm; receiving current Less than 13mA; sleep current Less than 1.8uA 10. Controller MCU: RISC-V N205 core 11. Coding : convolutional code, code 12. Encryption : AES128/256 13. Serial port configuration: 115200bps/8/1 14. Working temperature: -40~+85 15. Working humidity: 10%-90%RH (non-condensing) 16. Storage temperature: -40~+80 17. Storage humidity: 5%-90%RH (non-condensing) Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Package Contents: 2 x Wireless Serial Port RF Communication Module Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.