*LED display, 4 rear ultrasonic sensors
*More stable two angles sensor, horizontal and vertical for detection
*"Bi Bi..."Voice arming human voice speaking from separate buizzer
*Waterproof and shockproof, anti-fault information technology
*Intelligent identification of the rear obstacles position
*Working stable in wide temperature range: -40~+80 degrees centigrade
*safety and accuracy showing: 2.0m ~ 0.3m
*smart display, fashionable design