This sensor is of ultrasonic type. It measures the tanklevel by measuring the distance between the sensor and the liquid present in the tank. The encoding of the dimensions of the tank (volume, depth, length of the sleeve) makes it possible to convert the measured distance into real volume.
The sensor operates independently, using iot Lora and Sigfox networks to send the information. The sensor is on battery and does not need external power. This sensor requires a subscription to view data access.