Davies Craig offer two TPMS units in the range, the TyreGuard 400 & iTPMS 8886.


TyreGuard 400 

iTPMS 8886 


included in kit 

your own iPhone/iPad 

Tyres It Can Monitor 

 up to 22


Pressure Range 

 0 ~ 145 Psi
0 ~ 10 Bar

0 ~ 50.8 Psi
0 ~ 3.5 Bar

Temperature Range

20C up to +85C
-4F ~ +185F

-20C up to +85C
-4F ~ +185F

Sensor Range

0 ~ 7.6 meters
with booster 0 ~ 16 meters

0 ~ 10 meters

TyreGuard 400

Instruction Sheet for TyreGuard 400

Information Video
Kit Contents
  •  Under inflated tyres can place up to 10% more strain on the vehicle’s drive system and therefore the car mayuse 10% more fuel.
  •   If wheel alignment is out by even 6mm, fuel consumption increases by as much as 2 per cent.

The Davies Craig TYREGUARD 400 TPMS (Tyre Pressure Monitoring System) is a unique electronic safety system for monitoring air pressure and temperature in tyres. It consists of simple easy-to-install, screw on sensors and a hand-held monitor. Fixed to the tyre valve, each sensor monitors the air pressure and temperature inside the tyre, and then transmits the air pressure and temperature information to the monitor. This information is then graphically illustrated on the monitor screen and the operator can scroll through the data for each individual tyre. The driver or passenger can read the specific data of each tyre's air pressure and temperature parameters displayed on the screen. An audible alarm will sound and the red LED light will flash should the tyre pressure and/or temperature vary markedly from each tyre’s targeted air and temperature settings. The TPMS will monitor the air pressure and temperature of up to 22 tyres with a pressure range of 0 to 145 psi and sensors within 7.6 meters of the device 16 meters with the use of a signal Booster.

Each sensor/tyre can be individually set to the individual pressure you wish to operate in the respective tyres. For example, if you wish to run 64psi in the rear duals and 45psi in the front steer tyres, these pressures can be set on your monitor after you have ensured these same pressures have been placed in the respective tyres. The sensors can be placed on any tyre at any time BUT you must realign the specific sensor to the specific tyre once it has been placed on the respective valve. If you need to take the sensors off the valves for any reason, ensure they are replaced on the same valve to avoid the need to realign same.

This system has several warning notifications which advise low / high pressure, slow / rapid leak and high temperature. These will appear on the screen and via an audible alarm and red LED light flashing. In order to avoid the traffic accidents caused by the high or low air pressure, high temperature or leakage of the tyres, the monitoring system will flash and alarm to remind the driver to give the responding check and treatment to the tyres in time in case the tyres have high or low air pressure, leak age, high temperature, the battery has low voltage, or there are something wrong with the sensor, etc. Besides, by the adoption of advanced sensor and microprocessor, this system possesses the features of high reliability, strong real time, little error, small size, light weight, etc.

Working elements

The pressure sensor regularly measures the tyres air pressure, temperature and the battery voltage of itself and then sends out through radio wave after processing the collected data. The monitor encodes the collected data and shows the corresponding information on the screen. If there is the data information of a certain tyre out of the normal range, the monitor processing system will immediately give an alarm.

Please visit our buy online section to view the Davies Craig TYRE PRESSURE MONITORS range.


iTPMS 8886

Instruction Sheet

Demonstration Video

Kit Contents


The iTPMS 8886 has been specifically designed for use with Apple iPhones. It's a safety system for monitoring the individual air pressure and temperature of up to 4 tyres with a pressure range of 0 to 50.8 psi & temperature range of -20C up to +85C. It offers easy installation within 5 mins using only your bare hands and sensors matching is not required. It communicates via wireless transmission between sensors and transceivers; Bluetooth connection between iPhone and the transceiver.

Features of ITPMS 8886

  • Easy Installation in 5 mins with bare hands
  • No sensors matching is needed
  • Wireless transmission between sensors & transceivers; Bluetooth connection between iPhone & the transceiver
  • No tire rebalance is needed
  • Tire alarm shows on iPhone
  • Anti-theft system design of the External Sensors
  • Replaceable Button Cell inside External Sensors
  • Real time monitoring of individual tire pressure and temperature
  • Lost or damage sensors can be purchased individually
  • Parameters setting can be operated by App on iPhone, such as App interface language in Chinese or English;
  • Pressure unit in Bar、Psi or Kgf/cm2 ; Temperature unit in ℃ or ℉.

Please visit our buy online section to view the Davies Craig TYRE PRESSURE MONITORS range.


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