Durite Left Turn Speaker. Speaker announcement is "Caution, vehicle turning left". Used for warning external hazards of a potential threat when the vehicle is manoeuvring left.{{bul}Suitable for use on large, light goods and public service vehicles{/bul}{bul}Automatically activates when left turn indicator is in use{/bul}{bul}Protected to IP68{/bul}{bul} E Marked & R10 approved{/bul}} Note: At 70dB it is loud enough to be heard over moving traffic.