KingtronicRF KRF-688 User manual

Wireless Tire Pressure Monitoring System
KRF-688
WIRELESS TIRE PRESSURE MONITONING SYSTEM
MANUAL

Wireless Tire Pressure Monitoring System
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Wireless Tire Pressure Monitoring System
KRF-688 2-WAY Wireless Tire Pressure Monitoring System can ensure your safety driving. The system will
automatic check your tires pressure and temperature any time and monitor them on during driving. It warns
the driver in case of over or under-inflation, pressure leakage and excessive tire temperature through
indication on LCD display via the digitals, the backlight colors(3 colors)and the audible alarm immediately
while stationary and during driving.
The list of accessories for KRF-688 WTPMS
NO Name of unit Q’ty
A Main Display unit 1
B Holder of Display 1
C Power adaptor 1
D BATTERY AAA*2 2
E Tire pressure and temperature sensor 4
F Manual 1

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System Installation
zMain display unit installation :
Step 1: The power adaptor wire install to Holder of Display.
Step 2: Pastes on the Holder of Display the 3M double coated foam tape, puts in front the driver seat to be
easy to see also does not affect the driving view.
Step 3: After install the battery then showed all figure on the display. Backlight still light 5 sec. Then
stand-by.
Step 4: The display show ，，and when the system is Stand-by.

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Step 5: Setting up the Main display unit in the holder . Connect to the power plug.

Wireless Tire Pressure Monitoring System
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zTire pressure and temperature sensor installation:
Step 1: Take off the tires and bleed the air.
Step 2: Recognize the number on each sensor with position of tire on the vehicle.
○
1=Left Front No.1 ○ 2= Right Front No.2
○
3=Left Rear No.3 ○ 4=RightRear No.4

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Step 3: Switch to ON and installation the sensor to the rim(see installation diagram)
Step 4: Set up back the tires on the wheel and load with the completed tires in the vehicle.
Step 5: Set up new stand value of tire .(see Set Pressure stand value )
Turn on the ignition switch of the vehicle until the power is activated on the cigar lighter. The in-car display
will be activated.
Suggest : Before you turn off the ignition switch please OFF the main Unit. If not, when you turn on the
ignition , the main unit must reset.

Wireless Tire Pressure Monitoring System
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The System Operation
zKey Function
ON/OFF
Manual/Function select
Temperature/Pressure Switch
Transmit signal
Adjust Pressure values—press the key increase values
Adjust Pressure values—press the key reduce values

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zDisplay Figure Function
Each tire’s value of pressure/temperature
1
2
3 4
Transmit/Receive State Detect tire pressure state
Battery state Detect tire temperature state
Auto tire pressure detect
Temperature/Pressure unit switch
Program learning/ Replacing tire
Program option
Unusual tire Pre./Tem. Warning Unusual tire Pre./Tem. Alarm

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System Alarm
zWhen the system detects any unusual pressure from tires is lower 15% of Pressure stand value . It’s
warn state ,the display unit will turn yellow color backlight and beep sound . Each five minutes transmit
signal warning.
zWhen the system detects any unusual pressure from tires is lower 30% of Pressure stand value . It’s
alarm state ,the display unit will turn red color backlight and beep sound . Each one minutes transmit
signal alarm.
zWhen the system detects any temperature from tires is 75℃. It’s warn state ,the display unit will turn
yellow color backlight and beep sound . Each five minutes transmit signal warning.
zWhen the system detects any temperature from tires is 85℃. It’s alarm state ,the display unit will turn
red color backlight and beep sound . Each one minutes transmit signal alarm.

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System Operation
zPower ON/OFF :
Press button to turn ON/OFF the main unit.
TurnON -Pressbutton , hear the sound and backlight light 5 sec.
TurnOFF-Pressbutton over 2 sec. And release when hear beep 2 sound and backlight light 3 sec.
The display show ，，and when the system is Stand-by.
zTemperature/Pressure Switch :
Press button to change Temperature/Pressure values. Main unit beep 1 sound and display
4-values. Then disappear after 5 sec.
zPre-check tire pressure :
Take off the Main Unit form holder . Near the tire to be away from in the 40~50cm scope Press
button , after hear beep sound , the tire pressure value will be showed the display and after
5 seconds automatically vanishes.

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zSet Pressure stand value : (Take the Main Unit from the holder and set-up)
Press 3 sec
After Beep enter the
F
u
n
ct
i
o
n m
ode.
Press
Select
Press confirm
Press switch
tire position
Press Transmit
signal
After hear 1-
b
eep from Main
unit ;selected tire position
display new pressure value
and flash
Press 3 sec, After
1-beep then
When the new pressure
value stable then Press
Transmit confirm Quit Function mode.
Repeats the above setup for set the other tire

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zTires re-position :
Press confirm
Press ( increase )
( reduce)
adjust flash tire
pressure value
Press Transmit
Signal, After 1-Beep
express replace tire set
OK
Press 3 sec, After
1-beep then
Quit Function mode.
Enter this monitor press
key
1 2
3 4
Press switch
flash tire position
Press 3 sec
After 1-Beep enter the
F
u
n
ct
i
o
n m
ode.
Press
Select

910805 2
FCC Notice:
Notice : The changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
IMPORTANT NOTE: To comply with the FCC RF exposure compliance requirements, no change
to the antenna or the device is permitted. Any change to the antenna or the
device could result in the device exceeding the RF exposure requirements
and void user’s authority to operate the device.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.