bing tracking image
  1. TPMS Sensor
  2. TST
  3. 4 Sensors
  4. RV
  5. Trailer
  6. Mounts to Valve Stems
TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors

TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors

Our Price: $368.00
You Save: $64.00
TPMS Sensor
Shipping Weight: 2 lbs
Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
TPMS monitors RV tire pressure and temperature and sends updated info to wireless color monitor every 5 minutes. Flow through design lets you inflate tires without removing sensors from valve stems. Presets let you monitor up to 4 separate vehicles. Great Prices for the best tpms sensor from TST. TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors part number TST-507-FT-4-C can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (53)
  • Q & A (0)
  • Photos


  • 4 Sensors
  • RV
  • Trailer
  • TST
  • Mounts to Valve Stems
  • Flow Through Sensors
  • Monitor Display
  • Water Resistant

TPMS monitors RV tire pressure and temperature and sends updated info to wireless color monitor every 5 minutes. Flow through design lets you inflate tires without removing sensors from valve stems. Presets let you monitor up to 4 separate vehicles.


  • TPMS lets you monitor your RV's tire pressure and temperature via included monitor
    • Also works great with your motorhome, 5th wheel, motor coach, or trailer
  • Full-color, wide-screen monitor provides early warning detection with visual and audible alerts
    • Detects blowouts, significant pressure changes, and tire temperatures exceeding 158 degrees
    • Refreshes automatically with new tire information every 5 minutes
    • Presets let you monitor up to 4 separate vehicles or orientations
  • 4 Flow through sensors check tire pressure and temperature every 12 seconds
    • Flow through design allows tires to be inflated or deflated without removing the sensors
    • Brass construction designed for use on steel, chrome, or nickel valve stems
    • Easy installation onto your tires' valve stems
    • Theft-resistant covers require use of included cap wrench for removal
    • Additional sensors (sold separately) let you monitor up to 38 tires
  • Multiple mounts allow optimal monitor positioning
    • Easy-to-use suction cup mount lets you stick monitor to windshield or dashboard
    • Non-slip, rubber cradle mount lets you set monitor on dashboard
  • Micro USB cable and adapter let you charge monitor with your vehicle's 12-volt accessory outlet
  • Booster strengthens sensor signal and eliminates electronic interference


  • Tire sensors:
    • Dimensions: 1" diameter x 7/8" tall x 2-1/8" long
    • Pressure range: 0 psi - 196 psi
    • Operating frequency: 433.92 MHz
    • Operating temperature range: -40 F - 176 F (-40 C - 80 C)
    • Storage temperature range: -40 F - 185 F (-40 C - 85 C)
    • Battery life: 12 months - 18 months
  • Monitor:
    • Overall dimensions: 3" tall x 4-1/2" wide x 1" deep
    • Screen dimensions: 1-5/8" tall x 3-1/4" wide
    • Battery life: 5 days - 7 days on a full charge
    • Battery recharge time: 4 hours
  • Booster dimensions: 2-1/2" tall x 3" wide x 5/8" deep
  • Booster lead wire length: 57"
  • Monitoring capacity with included sensors: 4 tires
  • 3-Year limited warranty


This TST tire pressure monitoring system monitors the pressure and temperature level of the tires on your RV, motorhome, 5th wheel, motor coach, or trailer. The system utilizes flow through sensors that attach to the valve stems of your tires. The flow through design lets you inflate or deflate your tires without removing the sensors. When a tire sensor detects an anomaly, it will wirelessly transmit an alert to the included digital color monitor. Your monitor will emit flashing lights and an audible alert to notify you of an issue, and it will display details regarding the anomaly. A booster is included to strengthen and amplify the signal that the sensors are sending to the display monitor.

Initial Setup

The TST TPMS is easy to set up and includes all mounting hardware and tools for installation. First, assign the tire sensor positions through the monitor's Learning Mode. Label each sensor with the corresponding numbering code sticker so that you know which sensor is programmed to which tire position. When you are setting up the sensors make sure the one you are programming is at least 2' away from the other sensors. Otherwise the other sensors will interfere with the sensor you are attempting to program. Once the tire sensors have been recognized by the monitor, attach them to the valve stems of your vehicle's tires. Next, install the booster and connect it to a 12-volt power source on your vehicle or trailer.


Use the included suction cup holder to mount the color monitor on your windshield so you can monitor your tires while you drive. You can also use the included rubber, non-slip cradle mount to set the monitor on your dashboard.

TST Color Monitor Display

App Diagram

  1. Current Tire Selection - The tire icons indicate the position of your tires. A solid tire icon indicates that tire is programmed into your current setup. A blinking tire icon indicates that tire is experiencing an anomaly.
  2. Sensor Low Battery Alert - This displays when one of the sensor's batteries is low. The corresponding tire light will also flash to indicate which sensor's battery is affected.
  3. Display Battery Level Indicator - Shows the charged level of the internal battery. When this icon shows one bar it is recommended to charge the display as soon as possible. It takes approximately 4 hours for the battery to fully charge.
  4. Out Of Parameter Alert - This icon will flash during a high or low pressure alert, a high temperature alert, or a fast leak alert. In conjunction with this flashing light, the affected tire light will flash, the HI or LO PRESSURE, HI TEMP, or FAST LEAK indicators will light up, and an audible alert will sound.
  5. Display Alerts - These icons, along with the specific tire icon, will light up to indicate HI or LO PRESSURE, HI TEMP, or FAST LEAK. The bottom row indicates which programming mode you are in.
  6. Red LED Indicator - Lights up during an alert.
  7. Antenna - The multidirectional antenna helps eliminate electronic interference when paired with the signal booster.
  8. Temperature Indicator - Displays the current temperature of the selected tire in Fahrenheit or Celsius. This will also display your selected high temperature parameter during programming.
  9. Tire Pressure Indicator - Displays the current tire pressure of the selected tire. This will also display your selected high and low pressure parameters during programming.
  10. Power Switch - Lets you turn the monitor on and off.
  11. Charging Port - Plug the included USB cable into this port to charge the monitor. The side power switch will not turn off the display when constant power is applied to the unit.
  12. Backlight and Motion Detector - The backlight turns on when the vehicle is in motion, and there is little ambient light. It will sense periods of inaction and the display will "go to sleep" until the vehicle resumes motion.

TST Color Monitor Function Buttons

App Diagram

  1. GO Button - Press the GO button to tell the system where to "go". When pairing the sensors, once you have the tire icon flashing that you want to code, hit the GO button to tell it to get its unique code. If you only want to code a trailer, press the GO button to tell it to go to the trailer. When moving from axle to axle to set your warning pressures, hit the GO button to go to the next axle or next trailer.
  2. SET Button - Press the SET button to program your warning parameters, or to go into coding and set your configurations. This button locks in all specific settings.
  3. BACK Button - Press the BACK button to leave programming, or take the system back to the previous screen. If you need to remove a sensor code, use this button in the coding section to take the sensor position back to the factory settings.
  4. + Button - Press the + button to increase the temperature and pressure settings from the factory defaults. You can also scroll forward through your tires. Press the + button in conjunction with the GO button to drop your towing vehicle from a setting and add it back in.
  5. - Button - Press the - button to decrease the temperature and pressure settings from the factory defaults. You can also scroll backward through your tires. Press the - button in conjunction with the GO button to drop your towed vehicle from a setting and add it back in.

Multiple Wheel Layouts


You can program multiple layouts into the monitor, and you can scroll through each setup on the screen. This system can support up to 4 tire layouts and up to 38 tires total. Make sure to set your high and low pressure alarms for each layout that you are using. Some examples of popular layouts are shown above.

Tire Sensor Installation

Tire sensor Install Diagram

  1. Screw the anti-theft hex nut onto your tire's valve stem threads until it bottoms out.
  2. Screw the sensor onto the valve stem. Tighten the sensor until the air stops leaking and the sensor bottoms out on the valve stem. Give it a slight twist to seat the sensor while being careful not to over-tighten.
  3. Use the included wrench to tighten the hex nut counterclockwise until it is snug against the sensor.
  4. Screw the tire's valve cap onto the sensor.

Note: To inflate or deflate a tire it is not necessary remove the sensor. Simply unscrew the cap.



The booster - or repeater - amplifies the signal strength that the sensors send to the monitor. Booster installation requires a 12-volt power source. It is waterproof and can be mounted inside or outside your vehicle with the included mounting hardware. On a trailer, you can mount it in the battery box in front of the propane bottles. On a 5th wheel, you can install it in the house battery bay underneath the overhang. You will want to place it below the bank of mirrors so they don't bounce the signal back and cause the system to malfunction. On coaches with towed vehicles, you can install it in the back battery bay. The power draw is so minimal that you can leave the booster installed without running the battery down. If you decide to unhook it for storage remember to reconnect when you are ready to hit the road. A red light on the repeater indicates that the unit is connected to power and operating correctly.

TST-507-FT-4-C Truck System Technologies RV Tire Pressure Monitoring System w/ Color Display - Repeater - 4 Flow Through Transmitters

Item # TST-507-FT-4-C

Installation Details TST-507-FT-4-C Installation instructions

Customer Satisfaction Score:

Customer Reviews

TST TPMS for RVs - Color Display - Signal Booster - 4 Flow Through Tire Sensors - TST-507-FT-4-C

Average Customer Rating:  4.5 out of 5 stars   (53 Customer Reviews)

TPMS monitors RV tire pressure and temperature and sends updated info to wireless color monitor every 5 minutes. Flow through design lets you inflate tires without removing sensors from valve stems. Presets let you monitor up to 4 separate vehicles.


TPMS system works great, customizable alarm settings for both pressure and temperature. Only complaint is that the sensors are off by a psi or two compared to a tire gauge, but once figured out, it’s no issue.



It’s still working great!


I had trouble getting the sensors programed at first so I called the tech line and they help me programing all of the sensors in no time. I now feel more reassured pulling our 5th wheel Cardinal now that I can keep all the tire pressures monitored.


The tpms on my trailer tires have been wonderful. Last summer one of the tires had issues and I wouldn't have known if it wasn't for my tpms. However having the heavy weight of the Tom's sensor on the valve stem was causing the stems to tear. So I had the tire company install steel stems and I have no problems now. So recommend steel stems with this system.


The TPMS is an excellent product and recommended to anyone who pulls a trailer or towed vehicle. The flow through sensors are very convenient. This is my second TPMS by TST and I was very satisficed with the performance. The color screen is far easier to read in daylight. Programming took me a while as I am not to comfortable with electronics. After all was said and done, take my advice from a retired Hwy. Patrol Officer, Your safety is number one.! Don't leave home without one.


Find a good video and watch it closely, maybe several times. Installation wasn't too bad. Love the silicone stand that comes with the unit, brilliant idea! Placed it in far left corner of windshield so it doesn't block the view but is easy to see (and hear).


I installed these sensors on my Montana 5th wheel about a year ago. They have been very reliable and give me additional piece of mind while traveling. I had one tire blow out during this time and the system alarmed immediately. Also, once charged the monitor battery last for quite a long time allowing you to unplug from the charger and move the monitor around the truck cab for the best visibility during changing light conditions.


Have had these for a year now and they work great. The only reason I didn’t give 5 stars is because one of the flow through sensors had rough threads and is very hard to get started onto the valve stem. I never have any connection issues on my 38 ft 5th wheel with the booster installed.



I’ve had and used this product for over a year now and am very happy with the performance. It performs exactly as advertised. I’ve had no issues. I do replace the batteries once a year so I’m not really sure how much longer they would last.


Purchased the TPMS 10,000 miles ago. Has performed faultlessly and provided a sense of security never experienced in forty years of traileriing.



Continues to work faultlessly after another year and thousands of miles of service.


You do a wonderful job! Customer service, the how to videos and keeping track of the product in shipment is second to none. Thanks very much for being a reputable business.


This product was hardly usable. The screen was not clearly seen in ANY hint of daylight unless you cupped hands around it to block the light which is impossible when driving.
The alarms failed to alert at all when temps reached 150-160 degrees which resulted in 3 tire failures in 2100 miles (the tire guy set us up for failure too) but we bought the TPMS system to be ultimately prepared and in control for towing the large 5th wheel. The unit did show reliable inflation numbers but the temps were showing 40+ degrees cooler than the temp gun we also were using and ultimately the high temps caused the tire failures. We are getting new G rated tires and ultimately will replace the TPMS system for something reliable.

Etrailer Expert

Mike L.


I spoke with my TST representative, who had some comments and questions. The TST TPMS reports the air temperature inside the tire cavity. There is no way to use an IR gun to read internal air temperature, thus, the customer most likely read tread temperature, which should be substantially higher dependent on ambient air temperature and road surface temperature. An overloaded tire will run much hotter - as small as a 10 overload can cause a 20° or more increase in tread temperature. Because theyre not right there looking at your tires and the system, here are some troubleshooting questions: IR Gun: Is the IR gun calibrated? Was it tested again after this to verify its accuracy? How was the gun used while driving? The rig and tires: Brand and age of the rig? Is it properly serviced? Have the bearings been serviced according to manufactures specs? Have the brakes been serviced according to manufactures specs? Were the brakes and bearings inspected after the blow outs and eliminated them as causes of heat? Has the rig been weighed? Has the rig been been weighed at each tire position after being loaded to the maximum capacity and as it was ultimately used? Was the pressure in the tires set according to the tire manufacturers data chart for the weight of the heaviest corner tire position of the rig after being loaded for use? What is the brand, rating, pressure of the original tires that blew? Were these the correct tires for this unit, do they match the manufactures recommended loadweight rating? Were they driving in extreme outdoor temperatures? Were they descending a steep grade or multiple grades? If you can get back to me with some additional information, Ill provide it to TST.


Excellent product. I have a one axle trailer so knowing early when a tire is having a problem is critical. This monitor was easy to set up and has worked perfectly. I did not need to use the extension reaches the cab of my truck no problem. Continues reading on temp and pressure. I went on a cross country trip and this product was well worth the money.



Great Product , over a year and several more trips. Had one alert when tire temp went above my set parameters.


Good product altogether. Easy to setup and get running. Once setup it synchronized with the trailer tires within a few minutes.

My truck already has TPMS, and I'm wondering if I can get it to synch with the TPMS monitors that are already in place in the truck.

Matt C.


Works well, occasionally one sensor s out temporarily.


We are so happy with theTST tire pressure monitoring system we bought for our fifth wheel! We use it every time we travel and go camping, and it has not failed to work as promised. In fact, we were getting ready to leave on a week-long camping trip a couple of days after I had installed this system (which is really easy to do), and on the morning of our departure as I pulled our camper out of its port, the TPMS audible alarm went off! I had checked our tire pressures the night before, but somehow a screw had become lodged in the sidewall of one of our tires and I guess moving it caused it to lose air pressure. I would never have caught this without the TST TPMS system—at least not until we were on the road! So, yes, I highly recommend this great addition for safety and peace of mind while traveling!


The system( 4 flow through valves) has worked great for a year and approximately 7000 miles. We have it on a two axle 28 foot toy hauler with 10 ply tires. It warned us of a tire failure due to a sharp rock puncture while traveling on a gravel road and prevented any damage to the RV or wheel. I set the high pressure warning 16 psi above recommended tire pressure of 80 psi and on a 100 degree F day it sometimes sounds the alarm on one or both tires that are on the sun side of the RV. The tire pressure has never gone past 16 psi above set pressure. The color display is hard to see in the bright sun when placed on top of the dash board. This device has given me great peace of mind while traveling.


When I bought these I didn't read the part about these required metal valve stems. I put them on and with in a 100 miles I had a tire loosing air, these TST sensors are to heavy for standard rubber valve stems. After putting the new metal stems on I haven't a minutes problem.
These read out pressure as well as temperature per tire, they do alarm when pressures drop,they areare worth every penny. I do recommend these for anyone pulling an RV or boat. Also you can purchase more of the sensors


The installation was fast and easy. The TPMS sensors are inaccurate and constantly send false information. I set all the tires at the same air pressure. While traveling I noticed several of the sensors sent readings that showed higher air pressure and higher temperatures. I pulled over and rechecked the pressures with my air gauge. all tires were at the proper pressure. The sensors are very inaccurate.


Bought this product for my single axle travel trailer. I use one for each tire, one on the spare, and carry a spare with me for just in case. I have an F-150 SCAB towing a 21’ TT. It usually takes about 2-4 minutes for the module to connect to the monitors On each tire, but after that the connection is solid. I have not found a need to connect the repeater, but your usage may vary.


I bought a TST TPMS based largely on all the positive reviews.

Easy to read colour screen.

I like the flow through sensors. At first I thought they may have looked like big gobs hanging off the valve stems but it isn't all that bad.

Shipping was slower than normal because package was held up for days at customs which was out of everyone's control so it was not etrailer's fault shipping was slowed this time.


installed om my Aluminum 24' gooseneck cargo trailer. No issues with signal. Signal booster mounted to gooseneck.


Excellent product. Easy to set up and use. Verified accuracy with two other pressure gages. Very convenient to adjust tire pressure without removing sensor. A couple of items that could be improved: 1) The screen is hard to read in daytime conditions. 2) The monitor reads one tire at a time and takes about 10 seconds to scroll through all (4) tires. Too long to take your eyes off the road. Displaying all four tires simultaneously would be a safer option. Otherwise a very good product. I would purchase again.


Works perfectly so far. The extender was necessary to reach my 5th wheel tires, but I had no problem fastening to the inside wall of the battery compartment. Really provides peace of mind on the road.


Great product for keeping tabs on your trailer tire pressure and temperature. Also bought metal valve stems for better support of the sensor weight.


Just installed. Easy process. Sensors reading within 15 minutes. Am using the booster. The manual makes no mention of the inline fuse. Haven’t traveled with it yet. Seems like it will work well. etrailer price was $200 less than in store at service center.


On a long trip there's nothing better than the peace of mind knowing the condition of all my trailer tires. Even if one developed a slow leak, I would know right away before it went flat and caused major damage.


It was not difficult at all to sync the sensors to the display. Today will be my first use of them for a camping trip. On my way to Church they all synced up without the use of the extender. I have a Outdoors RV 23KTS travel trailer, so it is not very long.

Show More Reviews

See what our Experts say about this TST TPMS Sensor

Do you have a question about this TPMS Sensor?

Info for this part was:

Employee Tyler C
Edited by:
Tyler C
Employee Jeff D
Installed by:
Jeff D
Employee Adam E
Installed by:
Adam E
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video by:
Chris R
Employee Michael B
Video by:
Michael B
Employee Matthew S
Written by:
Matthew S
Employee Shane H
Test Fit:
Shane H
Employee Matthew E
Updated by:
Matthew E

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.