Truck TPMS Tyre Pressure Monitoring System Caravan Truck RV Sensor LCD 4WD Wireless 4x4

Heavy Duty with Truck Valve Internal TPMS Sensors x 4

RRP $449.00
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Item Number: TP-25SI

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The Masten TP-25SI TPMS Heavy Duty Vehicle Tyre Pressure Monitor System with Premium Waterproof External Sensors is specifically designed for for those wanting to monitor their tyre pressure in a non-obscure way due to the compact design of this monitor.

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Waterproof Rating: IP69K - Sensors can be kept under 1m of water for a short period of time. 

With new IP ratings, Masten's rearview cameras and tyre sensors are even more advantageous in environments requiring a high degree of protection from dust, submersion, and high-pressure, high-temperature spray-down. This level of protection is essential in many food & beverage, pharmaceutical, and petrochemical markets but also applies to off-road activities namely river crossing. 


Heavy Duty 4x4/Truck/Caravan Sensor Kit with Massive Pressure Range 0 to 13 BAR / 0 to 188PSI

Also Featuring Faster Pairing with LF Pair Sensor which means there is no need to deflate the tyre to pair!


IMPORTANT - This Listing includes everything you need to monitor the condition of your tyre pressure and temperature. It includes the following parts:

  1. Masten Real-Time TPMS 3.5" Monitor with Upgraded Transmitter and Improved Brightness Panel x 1
  2. Premium Masten TP-25S Heavy Duty Internal Valve Sensors x 4
  3. Cigarette Socket Power Adapter x 1
  4. Desk-Mount Monitor Holder Attachment x 1
  5. Windscreen Suction Mount x 1
  6. Masten TP-09REP Range Extender now included in all Truck systems with internal sensors


Towing? This clever monitor allows you to 'unlink' when you are not towing so you won't have the monitor beeping while worried about lost sensors. 

Instructions: When the trailer is not connected to the main vehicle, press the LINK and - buttons at the same time. The trailer and its tire icons will be removed temporarily. Press the LINK and + buttons at the same time and the trailer and its tire icons will re-appear. Clever, HUH!



The Masten TP-25 Heavy Duty TPMS Tyre Pressure Monitor System with Premium Waterproof Internal Sensors is specifically designed for those wanting to monitor their tyre pressure in a non-obscure way due to the compact design of this monitor.

Key benefits of the TP-25 Masten TPMS

  1. Upgraded 8m Singal Strength compared to similar models (with included TP-09REP Masten Range Extender you'll get 200m Range - line of sight)
  2. Improved Screen for greater visibility with intense sun glare with Automatic Backlight
  3. Monitors up to 38 Tyres
  4. Built-in and Rechargeable Lithium Battery with up to 60 hours charge
  5. Configurable high and low pressure and temperature warnings
  6. Fast Leakage Alert
  7. Anti-theft Sensors
  8. Pressure Range of 0 to 13 BAR / 0 to 188PSI
    1. Note, this TPMS is also compatible with spare sensors TP-09S Internal Sensors, TP-23S Truck Internal Sensors, TP-25S Truck Internal Sensors, TP-10S External Sensors and TP-24S External Truck/Caravan Sensors

The TPMS module works silently and alerts you if there is a problem with your tyres. The Tyre data can be viewed at all times. 

Feature List:

  • Professional Installation Required for Truck Valve Internal Type Sensors
  • Masten improved wireless signal
  • Attractive design with visual and audible alarm
  • 8 Metre Wireless Range
  • PSI and BAR Adjustable Units
  • Adjustable Front and rear sensors high/low-pressure alarm range
  • Real-time Tire Pressure and Temperature Display of all Tyres Simultaneously
  • TPMS information screen will automatically appear if a tyre problem is detected
  • The Masten interface allows you to easily identify problem tyres in red for fast evaluation
  • Premium quality sensors
  • Up to 3 Year Battery Life for Internal Sensors
  • User-friendly programming functions


  • Monitor Tyre Pressure and Temperature on your Car, Truck, Trailer, Caravan, Horse Floats Continuously in Real-time
  • The Masten TP-25 Monitor produces an audible alarm when the pressure drops below or rises above your preferred set ranges
  • Anti-Theft and Company Sensors that will lock onto your tyres
  • We have options available for up to 38 sensor kits – the TP-25 will pair with up to 38 tyres and we offer extra sensors individually or in sets of 4 at an extra charge
  • Easy to use monitor with a simple switch function allowing you to switch off caravan/trailer sensors when it’s parked 
  • Audible alarm when monitor or sensor batteries are running low
  • Included Cigarette Socket Charger and hard wire cable for concealed power

Sleep Function:

If the sensors have not been moved for 1 hour or more they will be in sleep mode. After around 5 seconds of movement, the sensors will 'wake' up and start sending the tyre information data (pressure/temperature) every 6 seconds to the monitor.



User Manuals comes in the box for unit and sensors: E-Copies also available from us. 

We have instructionals on our youtube page also if you are having difficulty installing. 


Included Accessory - Masten Range Extender



What are Tyre Pressure Monitor Systems?

Available in passenger vehicles since the 1980s and today is a mandatory feature in the United States. 


Benefits of a Masten TPMS?

The dynamic behavior of a pneumatic tire is closely connected to its inflation pressure. Key factors like braking distance and lateral stability require the inflation pressures to be adjusted and kept as specified by the vehicle manufacturer. Extreme under-inflation can even lead to thermal and mechanical overload caused by overheating and subsequent, sudden destruction of the tire itself. Additionally, fuel efficiency and tire wear are severely affected by under-inflation. Tires do not only leak air if punctured, they also leak air naturally, and over a year, even a typical new, properly mounted tire can lose from 20 to 60 kPa (3 to 9 psi), roughly 10% or even more of its initial pressure.

The significant advantages of TPMS are summarized as follows:

Fuel savings: According to the GITI, for every 10% of under-inflation on each tire on a vehicle, a 1% reduction in fuel economy will occur. In the United States alone, the Department of Transportation estimates that under-inflated tires waste 2 billion US gallons (7,600,000 m3) of fuel each year.

Extended tire life: Underinflated tires are the #1 cause of tire failure and contribute to tire disintegration, heat buildup, ply separation and sidewall/casing breakdowns. Further, a difference of 10 lbs. in pressure on a set of duals literally drags the lower pressured tire 13 feet per mile. Moreover, running a tire even briefly on inadequate pressure breaks down the casing and prevents the ability to retread. It is important to note that not all sudden tire failures are caused by under-inflation. Structural damages caused, for example, by hitting sharp curbs or potholes, can also lead to sudden tire failures, even a certain time after the damaging incident. These cannot be proactively detected by any TPMS.

Decreased downtime and maintenance: Under-inflated tires lead to costly hours of downtime and maintenance.

Improved safety: Under-inflated tires lead to tread separation and tire failure, resulting in 40,000 accidents, 33,000 injuries and over 650 deaths per year. Further, tires properly inflated add greater stability, handling and braking efficiencies and provide greater safety for the driver, the vehicle, the loads and others on the road.

Environmental efficiency: Under-inflated tires, as estimated by the Department of Transportation, release over 57.5 billion pounds of unnecessary carbon-monoxide pollutants into the atmosphere each year in the United States alone.

  1. 6 Good Reasons to Install a TPMS

    1. Prevent tire puncture

    When the tire is high or low, or high temperature, the system will send a trigger warning in time to reduce the puncture possibility

    2. Tire leaking warning

    When the tire is leaking, the system will immediately send a trigger warning

    3. Reduce tire wear

    It will accelerate tire wear when the tire pressure is too high or too low. Keep the tire pressure correct to extend tire life.

    4. Tire balance

    Vehicle deviation will easily occur if tires are unbalanced. Maintain the pressure balance of the 4 tires to improve vehicle handling and shorten the braking distance

    5. Save fuel

    When the tire pressure is low, the fuel consumption will be increased due to the high rolling resistance of the tire.

    6. Govenment Legislation

    In 2007 the US government legislated the mandatory installation of TPMS to new vehicles. 

    In 2012, 27 countries in the European Union plus Japan and Korea legistalted the mandatory installation of a TPMS to new vehicles. 

    In 2016, China, Australia and several South East Asian countries will legislate the mandatory installation of TPMS to new vehicles. 


  2. Color LCD display.
  3. Pressure and temperature alarm.
  4. Visible and audible alarm.
  5. Selectable pressure units: BAR or PSI.
  6. User programmable alarm condition.
  7. Tyre position swapping.
  8. User dimmable backlight on display.
  9. Supports up to 38 tyres
  10. Fast leakage alarm.
  11. Professional installation required, stable performance.
  12. Tyre pressure reference indication.
  13. Real time tyre pressure drift data.
  14. Temperature reference indication.
  15. Tyre temperature indication.

Monitor Specifications

Operational Temperature: -20 to 80°C

Storage Temperature: -30 to 85°C

Transmission Frequency: 433.92MHz

Charger Input Voltage: DC 8 to 30V

Size: 116(L) x 68(W) x25 (H)mm

Weight: 138g

Internal Valve Sensor Specifications

Operational Temperature: -40 to 80°C

Storage Temperature: -40 to 85°C

Pressure Range: 0 to 8BAR, 0~116PSI

Pressure Accuracy: ±0.1BAR, ±1.5PSI

Temperature Accuracy: ±3°C

Transmission Power:<10dBm

Transmission Frequency: 433.92MHz

Battery life: Up to 5 years

Size: Size: 60(L) x 35(W) x21(H)mm

Weight: 48g

External Cap Specifications - Optional

  1. Operational Temperature: -40 to 80°C
  2. Storage Temperature: -40 to 85°C
  3. Pressure Range: 0 to 13 BAR, 0~188PSI
  4. Pressure Accuracy: ±0.1BAR, ±1.5PSI
  5. Temperature Accuracy: ±3°C
  6. Transmission Power:<10dBm
  7. Transmission Frequency: 433.92MHz
  8. Battery life: 2 years(CR1632, -40 to 80°C)
  9. Size: 24mm(diameter) x 21mm(height) - without anti-theft housing
  10.         27mm(diameter) x 23mm(height) - with anti-theft housing
  11. Weight: 11.5g, without anti-theft housing

      15.4g, with anti-theft housing

Barcode # 2000000002835
Brand Masten
Shipping Weight 0.6000kg
Shipping Width 0.280m
Shipping Height 0.080m
Shipping Length 0.200m
Assembled Width 0.280m

2 Year Warranty



Changing the Pressure Alarm Ranges

Our TP-19 - TP-25 monitors default alarm settings are as follows:

  • High pressure: 175PSI - NOTE. the Minimum Alarm Range for these models is 3PSI.
  • Low pressure: 100PSI

If you need to re-set the high pressure alert range below 100PSI and find the high pressure setting range is from 100PSI to 218PSI (due to the low pressure setting max. data is 100PSI). This is normal. You will need to set the low pressure first, and then the high pressure again, for example, please set the first axle 1 low pressure to 30PSI, and then set axle 1 high pressure, the high pressure setting range for the axle 1 will be from 32PSI to 218PSI. 

Due to the caravan pressure alert range usually from 30PSI to 50PSI. So please re-set the low pressure of all axles to 30PSI and then scroll to re-set high pressure to 50PSI again. 

Normal re-setting step as below:

  1. Turn on the monitor.
  2. In normal mode, press the SET button for 3 seconds. You will hear a beep when you release.
  3. Press the SET button to scroll through the different settings, the sequence is pressure unit, temperature unit, axle 1 two tires high pressure, axle 1 two tires low pressure, axle 2 four tires high pressure, axle 2 four tires low pressure, axle 3 four tires high pressure, axle 3 four tires low pressure, trailer axle 12 tires high pressure, trailer axle 12 tires low pressure, all tires high temperature.
  4. Press the + or - button to change the setting data.
  5. Press SET button for 3 seconds with a beep to save the new setting.

If you want recover to the default setting, press and hold the SET button without release, then turn off the switch and turn on the switch with a beep. Default setting is restored successfully. 

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