Firstsensor ya haɓaka maganin ma'aunin matakin ruwa na IoT, wanda ake amfani dashi tare da firikwensin mu na A01 ultrasonic.
Na'urar firikwensin murfin manhole ( saka idanu matakin matakin ruwa na ultrasonic) yana ɗaukar fasahar ultrasonic, fasahar sadarwa ta NB-IOT da fasahar sadarwa ta 2.4G don gane ainihin lokacin kula da matakin ruwa na rijiyoyin dubawa.