*Three colors LCD Display, 4 rear sensors
*Bi-Bi-Bi; BiBiBi; Biii 3 stages voice alert
*Human Voice Speaking out distance in English
*Waterproof and shockproof ultrasonic sensor
*Special 2 angles sensor, horizontal & vertical detection
*Separate beeper avoid the display interfering

Technical Details:
Working voltage: 12V DC +/-2V
Maximum power: <5W
Working temperature: -40 to +80deg. C
Beeper: 60-105dB(adjustable)