Technical data: 1) Working voltage: DC 10V~16V 2) Max. Power: 4W 3) Working temperature: -35 ~ +70oC 4) Detecting distance: 0.35m ~ 2.50m 5) Measuring error: 0.02m 6) Sensor detection angle: 120 degrees 7) Alarming volume of built-in siren: 60dB 8) Alarming volume of external siren: 60dB 9) Response time: 250ms 10) Ultrasonic frequency: 40kHz 11) Current consumption: 100~250mA Technical advantages: 1) Warranty period: Three years 2) Sensor technical advantages: The core uses military techniques (aviation techniques) and has very high conversion efficiency from electricity to sound and stability; In it's structure, it uses internal dip angle focusing mode; So it's sensitivity is 2 ~ 3 times better than other normal sensors. 3) Measurement technical advantages: It uses fuzzy data processing technology and ensures precise and stable data measurement; The measurement error is only 2cm; In 60cm it can even identify 2mm steel wire. 4) Reliability technical advantages: The system adopts reliability design; The connectors, chip and power elements are used according to the aviation technology requirement; As a result, the service life of product is longer than the automobile service life. A) The interface of connectors: BNC and PS-2 with self buckled lock, guarantee shockproof ability; The mold is from Sanyo. B) Chip: Original Philips newest chip. C) Resistance: From Samsung. D) Display: Wide temperature range LCD is from stone, and when the system is turned on, it will have a self-test firstly then make some sounds, the sound times can show how many sensors works in order, and show whether all the sensors work in order, if there is a sensor that doesn't work, the display will show it. E) Laboratory temperature test: -45 ~ +80 degree 5) Certificate: ISO9001 (2000), E-Mark, FCC.