JEL-400 ikurikirana ya ultrasonic urwego rwa metero ni idahuza, igiciro gito kandi cyoroshye-gushiraho urwego.Ikoresha tekinoroji yo mu kirere igezweho mubikorwa rusange byubuzima.Bitandukanye nurwego rusanzwe, ibipimo bya ultrasonic bifite ibipimo byinshi.Ibicuruzwa biramba kandi biramba, byoroshye mubigaragara, kimwe kandi cyizewe mumikorere.