Buzzer parking detection | waterproof sensor with stainless clip | sensor with waterproof plug and easy replacement

>Buzzer alarm with “Bi…Bi…” alarm, without mute button , with " High / Low" volume button
>4 rear detection sensors (hole diameter 19.0 mm) with stainless metal clip 
>Working detection range 0.3-1.5 meters 
>Control box NON waterproof ,detection sensor with waterproof design 
>Sensor cable 20 cm+230cm
>Control box mounted in vehicle back truck
>Control box working power DC12/24V