OBD2 Tyre Watcher X User manual

Trye Watcher X - Caravan Tyre Pressure Monitoring
Operating instructions
Product Overview
Tyre Pressure Monitoring System (TPMS) design for caravans and the tow car. This system is
wireless as the dash unit is powered by solar and the wheel sensors send radio signals. This system
is designed to provide you with an extra safety and improved economy for both fuel and tyre wear.

Installing:
1. Press the left button for 3 seconds and the unit will turn on.
2. Take out the sensors and screw them onto the tyre valves. 1 is front right tyre and so on until
6/8 is rear left tyre sensor.
3. As you screw on the sensors you will see the tyre pressure display for that wheel.
4. Press and hold the middle button for 3 seconds and you will enter the settings screen.
5. Use the left and right button to make a selection then press the set button to move to the next
screen. The screens are in this order:
Display Unit setting - Pressure - PSI or BAR
Display Unit Setting - Temperature - C or F
Low Pressure Alarm Vehicle Tyres
High Pressure Alarm Vehicle Tyres
Low Pressure Alarm Van Tyres
High Pressure Alarm Van Tyres
Press and hold the middle button for 3 seconds to exit this screen and back to the main screen.
Stick the unit on your dash where you can see it.
You should be all set up.
Quick Disconnect for Dropping off Caravan:
Disconnect the caravan tyre pressure sensors:
Press the left and right buttons at the same time to disconnect the caravan, the disconnection
screen will display a horizontal bar,
Connect the caravan again:
Press the left and right buttons again to reconnect the rear tyre pressure.

Functions:
1. Low Power Consumption Dash Unit:
1.1. To manually turn off and on the dash unit press and hold the left button for 3 seconds to
turn on and press and hold the left button for 5 seconds to turn off.
1.2. When the vehicle is stationary, the receiver enters sleep mode and wakes up through the
vibration sensor. As soon as the door is open and shut the dash unit LCD screen will light up and
display the relevant data. Once the car is stationary for 10 minutes, the LCD screen turns off and
the receiver goes to sleep.
2. Display Function:
After the dash unit is started, the LCD screen will display the pressure and temperature
values of each wheel that was recorded before the dash unit entered sleep mode. The battery
charge level will be displayed and when the sun is charging the unit you will see a sun icon. When
the vehicle has been driven more than 10 kilometers the dah unit will update with live pressure
and temperature readings from each tyre.
3. Alarm Function:
The receiver has low pressure, high pressure, fast leakage, high temperature, low
battery and signal loss alarms. Pressing any button will stop the sound of the alarm, but the
blinking display will remain.
3.1, After entering the high pressure alarm, the pressure needs to drop 1.5psi below
high pressure value and the unit will exit alarm mode.
3.2. After entering the low pressure alarm, the pressure needs to rise 1.5psi above the
low pressure alarm valve and the unit will exit alarm mode.
3.3. After entering the high temperature alarm, the temperature drops 2 degrees above
the high temperature alarm value to exit the alarm state.
3.4. When the receiver receives the fast-leakage mark this is when a tyre pressure has
increased or decreased too quickly , the corresponding trye symbol is flashing, and at the same
time, the buzzer makes BI... BI sound. Pressing any key will stop the sound and the display will
remain flashing.
3.5 When the tyre sensor battery is low, the screen lights up, the corresponding tyre
symbol flashes, and the buzzer sounds BI... BI noise, press any button, the sound will stop, the
display will blink.
3.6. The dash unit fails to receive the signal from a sensor. After 25 minutes, the
corresponding tyre information disappears, and BI... BI sounds 5 prompts.
4. Function Settings:
The dash unit has 3 spring touch keys, which are left selection key, set, right selection
key
4.1. Press and hold the “SET” key for 3 seconds. After hearing the BI sound, release it
once and enter the setting state. Then short press the SET key to cycle through the pressure units
Bar/Pis→Pressure upper limit HI→Pressure lower limit Lo→Temperature upper limit C and other
functions. After the function is selected, press the left or right selection key to set the function.

4.2, Pressure Unit Type:
Under the pressure unit switch setting, short press the left selection key or the right
selection key to enter the settings for Bar and Psi. After setting, press SET key to exit.
4.3. Pressure Limit HI:
In the pressure upper limit setting, the upper pressure limit flashes. Short press the left
selection key or right key to select the adjustment pressure upper limit value, set to the
appropriate value and press the SET key to exit;
4.4, Lower Pressure Limit Lo:
In the lower pressure setting, the lower pressure limit flashes. Short press the left
selection key or right selection key to adjust the pressure lower limit value, set to the
appropriate value and press the SET key to exit;
4.5, Temperature Limit C:
In the upper temperature setting, the upper temperature limit flashes. Short press the
left selection key or the right selection key to adjust the temperature upper limit value, set to the
appropriate value and press the SET key to exit;
Note: After entering the setup state, if no operation is performed within 3 minutes, the
system will automatically exit the setup state;
5.0, ID match for pairing sensors:
Note: After entering the setting state, if no operation is performed within 2 minutes, the system
will automatically exit the setting state;
1. ID matching:
Long press the right selection key to enter the ID matching pair 8 flashes, then press the left key
to start pairing: the 1st wheel icon flashes, and within 2 minutes, install an external sensor, the
receiver receives the signal from the sensor, the 1st wheel When the matching is successful, the
2 beeps of "BI-BI" will enter the 2nd wheel matching, and the corresponding wheel icon flashes;
within 2 minutes, the external sensor is installed, the receiver receives the signal from the
sensor, and the 2nd wheel is successfully matched, "BI-BI" 2 beeps enter the match of wheel 3,
the corresponding wheel icon flashes; within 2 minutes, install the external sensor, the receiver
receives the signal from the sensor, the match of wheel 3 is successful, and the 2 beeps of "BI-BI"
enter the 4th wheel Match, the corresponding wheel icon flashes; within 2 minutes, install an
external sensor, the receiver receives the signal from the sensor, the 4th wheel is successfully
matched, "BI-BI" 2 sounds into the 5th wheel to match, the corresponding wheel icon flashes;
Within 2 minutes, install the external sensor, the receiver receives the signal from the sensor, the
5th wheel is successfully matched, "BI-BI" 2 sounds into the 6th wheel matching, the
corresponding wheel icon flashes; within 2 minutes, install the external The sensor, the receiver
receives the signal from the sensor, the 6th wheel is successfully matched, "BI-BI" 2 sounds into
the 7th wheel to match, the corresponding wheel icon flashes; within 2 minutes, the external

sensor is installed, and the receiver receives the sensor The signal sent, the No. 7 wheel is
successfully matched, "BI-BI" 2 beeps enter the No. 8 wheel matching, the corresponding wheel
icon flashes; within 2 minutes, the external sensor is installed, and the receiver receives the
signal from the sensor, No. 8 If the round matching is successful, ID code learning will be
automatically exited;
Specify a wheel ID matching can be entered by short pressing the right selection key.
Specifications Dash Unit :
Working voltage: 3.7-5V Display mode: LCD color screen
Working current: <13mA Shutdown current: <0.7mA
Working temperature: -20 ℃~ 80 ℃Storage temperature: -20 ℃~ 85 ℃
Transmitting frequency: 433.92MHz ± 20.00MHZ
Signal receiving sensitivity: -90dbm
8,Sensor installation diagram:
Specifications of Sensors:
Battery life: 24 months Storage temperature: -20 ℃~ 85 ℃
Working voltage: 2.1V-3.3V Working temperature: -20 ℃~ 85 ℃
Pressure range: 0 ～114/185psi Pressure accuracy: ± 1.3psi
Temperature accuracy: +/- 3 ℃Transmitting power: <13dBm
Frequency: 433.92MHz ± 20.00MHZ