Function characteristics It can continue to operate normally after being immerged into water for 48 hours After being powered for more than 3 seconds, the auto-control function will disable whistling of the horn; this will effectively prevent the damages of horn itself and automobile circuits when the contacts of the horn relay is burnt Overvoltage protection: a horn of 12V will not be damaged when it is connected by accident to a voltage of 24V, even the impact of peak value generated by the automobile cannot damage the horn slightly. It works within a wide operating voltage range, with a volume controlled as per the requirements of environment protection. Its ultra-thin figuration is applicable to all types of motor vehicles. It can work stably within a temperature range from -40C to 80C. Its whistling capacity are more than 350 thousand times, and its service life is 2-5 times of the contact-type horn, with a normal operation period of at least one year.
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