Ko te A20-kowae e ahu mai ana i runga i te whakamahinga o te tirotiro parewai wehea kati.Ko te rangahau Ultrasonic e whakamahi ana i te hoahoa hangarau anti-wai, ka whakaiti i te raru o te whakamaarama rangahau, IP67 e tika ana mo nga taiao kino.
Ko te kōwae R01 he pūoko taiaho taiaho iti me te awhe o roto o te 2-400cm.