HY Technologies B-2681-04, B-2691-04 User Manual
User’s Manual
Backup Parking Sensor System
Wireless Digital Display with Built-in Audible Alert
For Cars, VANs, SUVs, and Trucks
4 Rear In-Bumper Type Sensors
MODEL B-2681-04, B-2691-04
CE ISO9001
HY Technologies y http://parkingsensors.net y http://parking-sensors.hyt.com
Copyright 8 2006 HY Technologies y Milpitas y California y USA All Rights Reserved
Backup Parking Sensor System
4 Rear In-Bumper Type Sensors
Wireless Digital Display with Built-in Audible Alert
For Cars, VANs, SUVs, and Trucks
MODEL B-2681-04, B-2691-04
Included in the Box
¾ 4x Sensors with attached cable and 2-pin mini
connector. Cable Length: 2.5m (8.2ft)
¾ 1x Main Control Box with double-sided
self-adhesive and Velcro attachment
¾ 1x Wireless Digital Display with double-sided
self-adhesive on the bottom of the base
Features
¾ 4 Rear Sensor Backup Parking System
¾ In-bumper type sensors to give the look of factory
installed system
¾ System works when vehicle is in reverse
¾ Wireless Digital Display with Built-in Audible Alert
(Beeper)
Specifications
¾ CE and ISO9001 Approved
¾ Wireless Display RF Range: 0~20m (65.6ft)
¾ RF Frequency: 433KHz
¾ Operating Voltage: DC 10V ~ 15V
¾ Detecting Range: 0.3m ~ 2.0m (1ft ~ 6.6ft)
Displayed as 0.0 when less than 0.3m (1ft)
¾ Measuring Error: ± 0.1m (0.3ft)
¾ Sensor Detection Angle: 90°
¾ Detection Response Time: 300ms
¾ Audible Alert when obstacle within: 0.1m ~ 1.5m
(0.3ft ~ 4.9ft)
¾ 1x Drill Bit - Φ22.3mm (7/8”)
¾ 1x Power Cable for Wireless Digital Display with
earphone type plug. 2.5m (8.2ft) long
¾ 1x Power Cable for Main Control Box with 4-pin
plug and 5A fuse. 2.5m (8.2ft) long
¾ 1x User’s Manual
¾ 7 LED Lights (Green/Yellow/Red) on each side of the
display indicating orientation of obstacles and
Safe/Warning/Stop zone
¾ Designed for cars, VANs, SUVs, and trucks
¾ Distance display in meters
¾ 12 Month Warranty
¾ Sensor Diameter: Φ22.3mm (7/8”)
¾ Ultrasonic Frequency: 40Khz
¾ Audible Alert Volume: 73 db
¾ Maximum Power Consumption: 3W
¾ Current Consumption: 100~300mA
¾ Operating Temperature Range: -30 ~ +70°C
¾ Dimensions of the Wireless Display: Width x Depth x
Height = 8.6cm x 3.2cm x 2.1cm (3.4" x 1.3” x 0.83")
¾ Dimensions of the Main Control Box: Width x Depth x
Height = 9.0cm x 7.0cm x 2.3cm (3.5” x 2.7" x 0.91")
Note: The specifications are for reference only. They may be changed without prior notice.
Tools Needed
Φ22.3mm (7/8”) drill bit (include), drill, tape measure, chalk or marker, wire stripper, vinyl electrical tape,
cable/wire ties, voltage meter, screw driver set, pliers.
Note: Use a bi-metal 22.3mm (7/8") drill bit (not included) if drilling through metal bumpers.
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Flexible Antenna
Main Control Box
Sensors
ABCD
Red
Black
Back Up Light
Fuse (5A)
0.5
L
R
Fig.4 Front View of Wireless Digital Display
Flexible Antenna
Fig. 3 Main Control Box and Wiring
+12V from
Reverse Gear or
Ignition Switch
Chassis Ground
+
-
Red
Black
(+) 12V
( - ) or Chassis
Ground
Power Plug
(Socket on back
of display)
Power Connector
Fig.1 Mounting Height and Position of Sensors
H = 50 ~ 80cm (20” ~ 32”)
L1 = 6 ~ 15cm (2” ~ 6”)
L2 = L3 = L4 or L2 = L4 = 0.3L, L3 = 0.4L
Ground
50 ~ 80cm (20” ~ 32”)
Sensor Center Line
Parallel to Ground
Sensor
Sensor Mounting Height
Fig.2 Mounting Height and Angle of Sensor
L2
H
L1 L3 L4
L1
Ground
L
A
B
CD
How the System Works
The Backup Parking Sensor System determines obstacle distance by measuring the time needed for the
ultrasonic wave emitted by a sensor to reach an obstacle and for the sensor to receive the ultrasonic wave
reflected from the obstacle. Given the speed of the ultrasonic wave, the system can then calculate and display
the distance between the sensor and the obstacle.
To have the look of factory installed system, the system comes with 4 in-bumper type sensors to be installed in
the rear bumper by drilling holes through the bumper. The main control box and the wireless display get their
power by tapping into the back up light wires so that the system will work only when vehicle is put in reverse. It
is supplied with a wireless digital display which shows the exact distance from an obstacle and eliminates the
wiring between the display and main control box. The wireless display can be mounted up to 20m (66 feet) away
from the main control box (still requires its own +12V power supply). This is especially convenient for installation
on long vehicles. Seven (7) LED Lights (2xGreen/3xYellow/2xRed) on each side of the wireless distance
display indicate both orientation of obstacles and Safe/Warning/Stop zone. The audible alert (beeper) is built in
the wireless display. It beeps faster as vehicle gets closer to obstacle and sounds continuously when vehicle is
within 0.3m (1ft) from the obstacle.
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