TST 507 Series TPMS RV Tire Pressure Monitoring System - 4 Cap Sensors

In this review of the TST 507 Series TPMS for RVs and trailers, the bottom line is straightforward: this kit is aimed at owners of travel trailers, campers and motorhomes who need reliable, hands-off tire safety monitoring while on the road. The single biggest reason to buy is the combination of a compact 3.5in color display with audible and visual alerts plus four weatherproof cap sensors that provide continuous alerts for low pressure, high pressure, fast leaks and high temperature, helping prevent blowouts and downtime on long trips.

Key Features

• Safety Monitoring: Audible and visual alerts notify the driver of low pressure, high pressure, fast leaks and high temperature so problems are caught before they become dangerous.
• Compact Color Display: The 3.5in rechargeable color monitor gives a clear at-a-glance readout and includes both suction cup and rubber dash mounts for flexible placement.
• Easy Connectivity: Sensors pair quickly to the display and can be reprogrammed after tire rotation or when swapping tire locations, simplifying maintenance.
• Expandable System: The monitor can track your towing truck plus up to four towable vehicles, making it suitable for multi-axle trailers and RV setups.
• Long-Lasting Sensors: Cap-style sensors use user-replaceable CR2032 batteries and provide low battery alerts so you can replace cells before a sensor dies.
• Complete Kit with Support: The package includes the display, four cap sensors, a repeater, rubber dash mount and charging cable, backed by USA-based live customer service and a three-year warranty.

Who It's For

This TPMS is best for RV and trailer owners who tow large rigs, multiple axles or additional vehicles and want continuous, automated pressure and temperature monitoring without wiring sensors to each wheel. It appeals to people who value audible alerts and a portable display that can be moved between vehicles or dash positions.

Those who prefer an integrated OEM-style system hardwired into a tow vehicle, or who need sensors that are invisible inside the wheel, may want to look at other TPMS choices. Also, users who require a larger daytime-readable display should be aware the 3.5in display can be hard to read in very bright daylight according to some owners.

Pros & Cons

Pros

• Reliable alerts for low/high pressure, fast leaks and high temperature help prevent tire failures.
• Compact rechargeable color display with flexible mounting options is convenient for RV cabins and dashboards.
• Expandable monitoring and easy sensor swapping make it practical for trailers, campers and multi-vehicle setups.
• Includes a complete kit and USA-based support plus a three-year warranty for peace of mind.

Cons

• Display legibility can be limited in very bright daylight for some users.
• Cap-style sensors require CR2032 battery replacements over time, adding small recurring maintenance.

Specifications

Display	3.5in color rechargeable monitor
Sensor Type	Cap-style wireless sensor with CR2032 battery
Alerts	Low pressure, high pressure, fast leak, high temperature (audible and visual)
Mounting	Suction cup and rubber dash mounts included
Kit Includes	Display monitor, 4 cap sensors, repeater, rubber dash mount, charging cable
Warranty & Support	Three-year system warranty with USA-based live customer service

Our Verdict

The TST 507 Series TPMS is a practical, value-minded choice for RV and trailer owners who need dependable tire safety monitoring across multi-axle rigs or multiple towed vehicles. Its expandable monitoring, easy sensor setup and clear alerting make it worth buying for those who prioritize proactive tire safety, though anyone needing perfect daytime readability or factory-style in-wheel sensors should consider alternatives.

Frequently Asked Questions

Can the system monitor more than one vehicle?
The monitor is expandable and can track the towing truck plus up to four towable vehicles, useful for multi-vehicle setups.

How are sensor batteries replaced?
Sensors use user-replaceable CR2032 cells and the system provides low battery alerts so you can swap cells before a sensor fails.

What kind of alerts does it provide?
The system issues audible and visual alerts for low pressure, high pressure, fast leaks and high temperature and will auto-lock on the problem tire.