Supports global license-free ISM 433MHZ frequency band;Supports air , an ultra-low power consumption function, suitable for battery-powered applications Support fixed-point transmission, broadcast transmission, channel monitoring, multi-level relay for ultra-long-distance communication. Supports RSSI signal strength indication function for evaluating signal quality and improving communication networks.Supports function, which monitors the channel environment noise before sending, which can greatly improve the communication success rate of the module in harsh environments. LORA spread spectrum technology, up to 84 channels optional,Supports air , online configuration, carrier monitoring, automatic relay, communication key, and low-power sleep Under ideal circumstances, the communication distance can reach 5KM Due to different product batches, the appearance , which does not affect the use Colour:Black Material:PC Package Contents: 1x SX1268 wireless 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.