wireless sensor| ultrasonic sensor | IOT sensor

NB-IoT

DF520_NB_User's manual_V2.0.4: Detailed Info - Download
File Size：1.48 Mb：0Update Time：2020/10/20

DF520_Ultrasonic_Level_Sensor_NB_Datsheet_V1.4: Detailed Info - Download
File Size：630.21 Kb：0Update Time：2020/10/20