Installation of reversing radar can resolve the worries of reversing the driver, greatly reducing vehicle traffic accidents and cut brush. Such assistance, especially for the novice and the need for a female friend.In bad weather, low light environment, such as: Snow days, fog, poor lighting at night, etc., the more obvious advantage of reversing radar.
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<br />Center frequency (KHz): 40 1.0KHz
<br />Echo Sensitivity:  200mV
<br />Decay Time:  1.2ms
<br />Directivity (deg ) X-axis: 60 15
<br />Directivity (deg ) Y-axis: 60 15
<br />Capacitance ( pF ): 2000 15%
<br />Allowable Maximum Input Voltage ( Vp-p): 140 (40KHz) Pulse width 0.5ms, interval 20ms
<br />Mean Time to Failure: 5000h
<br />Operating Temperature ( Degree Celsius ): -40~+80
<br />Storage Temperature ( Degree Celsius ): -40~+80
<br />Cable Length: 250 cm
<br />Radar Diameter: 22.5 mm
<br />Color: Black/Sliver/White
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<br />Package Includes:
<br />1 x New Parking Sensor Car Reverse Back Up Ultrasonic Radar 
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<br />NOTE:the color difference is hard to avoid in your smartphone. If you can not accept this little difference, be cautious before you making the orders. thanks for understanding. Best wish!