TST (Truck System Technologies) 507 Series TPMS — 4-Sensor Cap Kit with Color Display
Priced as of May 23, 2026
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Prices may varyThe Podium · Top 3 in Tire Pressure Monitor (TPMS)
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- Silver · #2You're hereTST (Truck System Technologies)507 Series TPMS — 4-Sensor Cap Kit with Color DisplayCCT 6.9
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CarCareTruth's Analysis
Last reviewed May 26, 2026
TL;DR Manufacturer-rated at ±1 PSI but no independent reference-gauge cross-check was found at time of review. No community follow-up data on long-term sensor battery life was found at time of review.
What it is and how it performs
The TST 507-RV-4-C is an external-cap TPMS kit built for RVs and towing. Four CR2032 cap sensors transmit pressure and temperature at 433.92 MHz via an included repeater to a 3.5-inch color display that monitors up to 115 tires across four trailers. FCC ID TAD7104 is on the sensor label but could not be confirmed in the fcc.gov database at time of review. Sensors cover 1–218 PSI and −40°F. Three-year warranty included.
Who should buy this — and who should skip it
Good fit for RV owners and towers who need long-vehicle RF coverage and trailer mode. Passenger-car drivers can find capable TPMS options at lower price points.
Safety and environmental impact
FCC ID TAD7104 is claimed but not independently verifiable via fcc.gov or fccid.io at time of review. The display charges via 12V car adapter — no AC wall plug included. No active CPSC recall found for the 507 Series. Dispose of the display Li-ion battery and CR2032 sensor cells via Call2Recycle.
Frequently asked questions
What batteries do the TST 507 cap sensors use?▾
The cap sensors use CR2032 batteries, which are user-replaceable in the driveway — no tire shop needed. The manufacturer estimates 1 to 1.5 years of battery life per sensor under normal use.
Does the TST 507 work on trailers and RVs?▾
Yes — the kit includes a signal repeater specifically for long-vehicle applications. The display supports trailer mode and can monitor up to 115 tires across the towing vehicle and up to four trailers.
Do the TST 507 cap sensors work on rubber valve stems?▾
Yes — the 507 cap sensors are compatible with both metal and rubber valve stems. No modification to the valve stem is required.
What is the pressure range supported by the TST 507?▾
The cap sensors support 1 to 218 PSI, which covers RV, trailer, and light truck applications where tire pressures can run significantly higher than a passenger car.
From the manufacturer
Marketing copy from TST (Truck System Technologies), via Amazon. Not editorial.
- •Safety Monitoring: Alerts for low pressure, high pressure, fast leaks, high temperature; Audible and visual alerts with auto-lock on problem tire; Comprehensive tire pressure monitoring system for RV and trailer safety
- •Premium Display: Compact 3.5-inch color display with rechargeable battery; Includes Micro-USB charger; Features suction cup and rubber dash mounts; Quick and seamless sensor connectivity for reliable tire pressure monitor
- •Expandable System: Can monitor your towing truck and up to four towable vehicles; Easily swap tire locations after rotation; Perfect TPMS for trailers, RVs, and campers with multiple axles or additional towed vehicles
- •Long-Lasting Sensors: Low sensor battery alerts with user-replaceable CR2032 batteries; Cap design for easy installation; Wireless tire pressure monitoring system designed specifically for RV, travel trailer, and camper use
- •USA Support & Warranty: Three-year warranty on complete trailer TPMS system; USA-based live customer service; Trusted by thousands of RV owners; Complete kit includes display monitor, 4 cap sensors, repeater, magnetic mount, and charging cable
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Manufacturer videos
Manufacturer images
Manufacturer specifications
- Package Dimensions
- 8.5 x 8.35 x 3.27 inches
- Item Weight
- 1.65 pounds
- Manufacturer
- TST TRUCK SYSTEM TECHNOLOGIES
- ASIN
- B07FKTH136
- Item model number
- TST-TST507RV4C
- Batteries
- 4 CR2032 batteries required.
- Is Discontinued By Manufacturer
- No
- Date First Available
- December 28, 2017
- Best Sellers Rank
- #22,325 in Automotive (See Top 100 in Automotive) #78 in Replacement Tire Pressure Monitoring System (TPMS) Sensors
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Top Amazon review
↗External — Amazon's most-helpful review for context.
Flawless product
Simple installation and remarkable results. I installed the tire monitoring system so that I could feel safe knowing the tires on my RV were within safe perimeters. After installing I took it on an 800 mile road trip and everything performed flawlessly. I was able to monitor each of the four RV tires temperature and pressures and without any connection issues. It gave me peace of mind and all the reviews saying this system performed better than other is 100% true. My truck already has a factory monitor system but if it didn’t I could have also added the monitors to the system. It’s important to know the pressure and temps in trailer tires to prevent a damaging issue before it occurs. This system provides that and with no loss in signal. The monitor display switches between tires and it rechargeable through a ubs cord or can stay hooked up to your usb port or with cigarette adapter. Price is reasonable for the quality and reliability of this product. I found the setup to be easy and you can also find many videos on YouTube to aid. Overall this company gets my vote and I will recommend it to my family and friends.