Product
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DF702 NB-iot Garbage Bin Fill Status Detector wireless ultrasonic level sensor 2 meters
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Cheap Smart Trash Bin Sensor/Dectector with NB-IoT/LoraWAN/Sigfox
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Ultrasonic LoraWAN Liquid Level Sensor DF520
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Ultrasonic Solid Level Sensor /Meter/Detector
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Smart ultrasonic waste bin trash sensor /detector can measure trash bin status
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DF520 Ultrasonic level sensors non contact no drill hole level meter with Lora/NB-IoT/GPRS/3g/4g module