/ GFKS technology, LoRa (remote) spread spectrum technology Half-duplex communication Super anti-interference (channel rejection ratio: 56db) High receiver sensitivity -139dbm. multi-band, do not need to apply the frequency of free use. Multi-frequency optional, a of transmission rates. Can be used in FDMA and FM technology. Intelligent reset, low-voltage monitoring, time, low-power mode, sleep mode Low power receive current: 10-12mA 256-bit TX / RX RSSI channel detection function Transmission Mode: / Direct Mode (Recommended Packet Mode) Configuration: / Wake on Air / Low Power / Carrier Sense / FEC Error Correction / Encryption Ultra-long-distance transmission as far as 3KM open Colour:blue Material:PC+metal type:915Mhz Package Contents: 1 x Lora 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. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!