DUFENSE is the super directional speaker (1khz sine ±15’ -10dB) that drivers in vehicles running over 110km/h can clearly hear an audible message and warning. The sound can be herd in a car from max 600m while the car is running over 110km/h. The sound is enough strong to attract a driver when a car is within 200m from the installed speaker. At this moment, the driver has 8s to recognize a traffic pattern change or to avoid unexpected risks.
Compared to Horn speaker, the angle of sound output from SD speaker is very narrow. The SD speaker Sound not only can clearly heard in the lane the speaker is positioned but also the sound does not disturb other lanes frome a distance.
The person in chargeHyun Chul Kim
Address705 Haean-ro Sangnok-gu, Ansan-si, Gyeonggi-do (15588)
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