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Using the Display (for LED System, F2R4L , F4R4L)
The display has a built-in beeper (audible alert) with On/Off Switch. There are seven (7) LED
Lights (3 Green, 2 Yellow, 2 Red) on each side of the two-digit distance display (Fig. 4). The
color LED lights indicate both orientation of obstacle and Safe/Warning/Stop zone (Chart. 1).
Chart 1.
LED Display System (F2R4L, F4R4L)
Orientation of Obstacle, Distance Display, and Audible Alert
Obstacle
Distance
Viewing from the Front of the Display
LEDs on the Left Side
of the Display
Responding to Rear Sensor A,B
or Front Sensor E,F
Beeping
(Audible
Alert)
Digital
Distance
Display
LEDs on the Right Side
of the Display
Responding to Rear Sensor C,D
or Front Sensor G,H
Safe Zone
(> 6.6ft)
No LEDs on
No
No LEDs on
Safe Zone
(6.6~4.9ft)
Starting to light up at 4.9ft
Starting to
beep at 4.9ft
Starting to light up at 4.9ft
Warning
Zone
(4.9~3.3ft)
1 - 3 Green on
Fast
Actual
distance
1 - 3 Green on
Warning
Zone
(3.3~2.3ft)
3 Green/1 -2 Yellow on
Faster
Actual
distance
1 -2 Yellow/3 Green on
Stop Zone
(2.3~1.0ft)
3 Green/2 Yellow/1 - 2 Red on
Fastest
Actual
distance
1 - 2 Red/2 Yellow/3 Green on
Stop Zone
(1.0~0.0ft)
3 Green/2 Yellow/2 Red on
Continuously 0.0
2 Red/2 Yellow/3 Green on
Using the Beeper - Audible Alert (for Beeper Only System, F2R4B , F4R4B)
The beeper beeps faster as vehicle gets closer to obstacle and sounds continuously when
vehicle is within 1ft (0.3m) from the obstacle.
Chart 2.
Beeper Only System (F2R4B , F4R4B)
Obstacle Distance, Alert Zones, and Audible Alert
Alert Zones
Obstacle Distance
Beeping (Audible Alert)
Safe Zone
6.6~4.9ft
Starting to beep at 4.9ft
Safe Zone
4.9~3.3ft
Beeping Fast to Faster
Safe Zone
3.3~2.3ft
Beeping Faster to Fastest
Warning Zone
2.3~1.0ft
Beeping Fastest
Stop Zone
1.0~0.0ft
Beeping Continuously
●
(Note: 1ft = 0.3m)