Durite left & rear blind spot detection system includes an driver buzzer and external left turn & reversing speakers to warn cyclists and pedestrians.{bul}For 12/24V commercial vehicles{/bul}{bul}Two stage sensitivity 0-0.9m & 0-1.8m{/bul}{bul}Control maximum speed at which you want obstacles to be detected using GPS technology{/bul}{bul}Speakers waterproof to IP68{/bul}{bul}ECE, EMC R10 approved{/bul}