Ultrasonic Distance/Level Sensor EM500-UDL provides highly accurate distance measurement for a variety of applications in harsh environments like flood monitoring, waste water management, fill level monitoring in grains or fertilizer. The measurement is based on ultrasonic waves transmitted and reflected back from nearby objects. https://elecena.pl/product/18413022/em500-udl-868m-w100-ultrasonic-distance-level-sensor-lorawan 2021-05-09 https://elecena.pl/product/18413022/em500-udl-868m-w100-ultrasonic-distance-level-sensor-lorawan 2022-06-05 https://elecena.pl/product/18413022/em500-udl-868m-w100-ultrasonic-distance-level-sensor-lorawan 2023-09-29 https://elecena.pl/product/18413022/em500-udl-868m-w100-ultrasonic-distance-level-sensor-lorawan 2026-10-17