LoRaWAN liquid level sensor The Dragino LDDS20 is a LoRaWAN ultrasonic liquid level sensor for the Internet of Things solution. It measures the height of the liquid in a container without touching it or opening the container, and sends the value to the IoT server via the LoRaWAN network. The LDDS20 sensor is installed directly under the container to measure the height of the liquid level. The user does not need to open a hole in the container to be tested. The contactless method makes the measurement safe, easier and possible for some more complex situations. https://elecena.pl/product/18568569/ldds20-eu868-lorawan-ultrasonic-liquid-level-sensor 2021-05-24 https://elecena.pl/product/18568569/ldds20-eu868-lorawan-ultrasonic-liquid-level-sensor 2023-09-12 https://elecena.pl/product/18568569/ldds20-eu868-lorawan-ultrasonic-liquid-level-sensor 2025-08-13 https://elecena.pl/product/18568569/ldds20-eu868-lorawan-ultrasonic-liquid-level-sensor 2025-12-12