Ua hoʻomohala ʻo YIHTONG, aia ma Henan, Kina, i kahi mea ʻike hoʻoheheʻe ʻōpala naʻauao, i hoʻohālikelike ʻia me ka sensor A13 o kā mākou hui no ka noi ultrasonic remote ranging.
Hoʻohana ʻo YIHTONG i ka ʻenehana kani ultrasonic e like me ka ʻike ʻike, hoʻouna i ka ʻike a me ka ʻikepili i ka manawa maoli ma o ka module kamaʻilio NB-IoT, a nānā i ke ʻano o ka piha ʻana o nā pahu ʻōpala i puʻunaue ʻia ma ka wahi hana ma o ka hui ʻana me GIS kapuaʻi kiaʻi kahua.
