Products
Front & Rear System

Sensors are installed in both front and rear bumpers providing protection whenever you drive forward or in reverse. The system is connected to both reversing light and ACC for power supply. When engine is activated, front sensors start to work. Buzzer turns mute automatically if obstacles keep stationary or move farther. When reverse gear is engaged, the front sensors will stop working and the rear sensors will be activated.

FR51B Series
System Composition

Model
Composition
QZ-4251B
4 rear sensors/2 front sensors/control box/buzzer/numeric LCD display
QZ-4451B
4 rear sensors/2 front sensors/control box/buzzer/numeric LCD display

Sensors Applicable: All types
Control Boxes Applicable: CB-07, CB-08, CB-09


 Audible Distance Indication

Rear Front
1.50 to 0.80m 
Bi, Bi, Bi
1.50 to 0.80m
Bi, Bi, Bi
0.80 to 0.40m Bi Bi BiBi (the closer, the faster) 0.80 to 0.40m BiBi, BiBi, BiBi
0.40 to 0m Bi… (solid beeping) 0.40 to 0m BiBiBi, BiBiBi, BiBiBi

Visual Distance Indication 

Rear Front
3.00 to 0.35m 
3 digits distance numeric display
3.00 to 0.35m
3 digits distance numeric display
0.35 to 0m Display 000 0.35 to 0m Display 000
Waving curves indicating orientation of obstacles Waving curves indicating orientation of obstacles

General Specifications
Working Voltage
10 to 15V
Working Temperature
-30℃to 70℃
Current Consumption
<100mA
Acoustic Volume
>85dB at 10cm
Response Time
300ms
Ultrasonic Frequency
40KHz