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PressurePro FX 4 TPMS for RVs and Trailers - Smartphone Display - 4 Waterproof Sensors

PressurePro FX 4 TPMS for RVs and Trailers - Smartphone Display - 4 Waterproof Sensors

Item # 372FX4K
Our Price: $315.17
You Save: $315.39
TPMS Sensor
Shipping Weight: 0.97 lbs
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Use your smartphone to monitor the tire conditions on your RV or towable with this TPMS. Customizable app sends you real-time alerts about your tire pressure and temperature levels. Waterproof tire sensors are well-suited for boat trailers. Great Prices for the best tpms sensor from JR Products. PressurePro FX 4 TPMS for RVs and Trailers - Smartphone Display - 4 Waterproof Sensors part number 372FX4K can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (17)
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JR Products TPMS Sensor - 372FX4K

  • 4 Sensors
  • RV
  • Trailer
  • JR Products
  • Mounts to Valve Stems
  • Standard Sensors
  • Smartphone Display
  • Waterproof

Use your smartphone to monitor the tire conditions on your RV or towable with this TPMS. Customizable app sends you real-time alerts about your tire pressure and temperature levels. Waterproof tire sensors are well-suited for boat trailers.


  • TPMS gives you peace of mind by letting you monitor your RV's tire conditions with your smartphone
    • Also works great with your boat trailer, 5th wheel, or other towable
  • PressurePro app (required) for your smartphone makes monitoring your tires convenient and easy
    • User-friendly interface is easy to read and navigate
    • No additional monitor to clutter up your cab
  • Real-time tire pressure and temperature readings display as you travel
    • Readings given in psi, BAR, or kPA
  • 5 Customizable alerts warn you of potential problems
    • Receive push notifications about over pressure, under pressure, high temperature, cross axle variance, and signal loss
  • Waterproof sensors can be fully submerged under water
    • Ideal for marine applications
  • Perfect for fleets or people who tow multiple vehicles or trailers
    • Save multiple vehicle profiles and easily switch between them in the app
    • Additional sensors (3722SEN - sold separately) let you monitor up to 40 tires
  • Simple setup and installation
    • Pulse FX device plugs into your vehicle's 12V power outlet
    • Sensors thread directly onto your tires' valve stems and connect to your phone via Bluetooth
    • App walks you step-by-step through setup and operation
  • Made in the USA


  • Tire sensors:
    • Dimensions: 1" diameter x 1-1/8" long
    • Pressure range: 8 ps toi 215 psi
    • Operating temperature range: -40 F to 158 F (-40 C to 70 C)
    • Storage temperature: -40 F to 185 F (-40 C to 85 C)
  • Pulse FX device:
    • Dimensions: 2-5/16" long x 2-5/16" wide x 3/4" tall
  • Smartphone compatibility: iPhone and Android
  • Bluetooth version: 4.2
  • Quantity: 4 sensors (1 per tire)
  • 1-Year warranty

Whether you're towing a trailer or taking a long trip with your family in your RV, the last thing you want to worry about is a tire blowout. If your tires aren't inflated properly, or if they have a slow leak you're not aware of, you run the risk of having your trip derailed.

A tire pressure monitoring system gives you peace of mind when you're towing or traveling. The PressurePro FX 4 monitors the pressure and temperature levels of the tires on your RV, 5th wheel, boat trailer, or towed car. The system uses sensors that easily thread onto your tires' valve stems. When a tire sensor detects an anomaly, it will immediately alert you of the issue.

Monitor Your Tires with Your Smartphone

Most TPMS systems require you to install a separate monitor, which clutters up the inside of your cab with another piece of equipment. The PressurePro FX 4 lets you conveniently track your tires with the device you already have with you: your smartphone. The free PressurePro app - available on both iOS and Android devices - is easy to customize, giving you complete control over this TPMS system.

Installation and Setup

Installation is easy and straightforward. Unlike many TPMS systems that need to be connected directly to your vehicle's battery for power, the Pulse FX box, which mounts inside the cab of your vehicle with the included hook-and-loop mounting pads, simply plugs into your vehicle's 12V power outlet. The included dipole antenna mounts to your windshield (or anywhere else in your cab) with hook-and-loop pads to help boost the wireless signal.

PressurePro App Pair Device PressurePro App Success Screen

Setting up the PressurePro app is simple. Once you've downloaded the app to your smartphone, you'll be able to pair it with the Pulse FX device.

PressurePro App Select Vehicle Type PressurePro App Select Axles

From there, select your vehicle type and how many wheels you want to monitor. If you need to monitor more than 2 wheels, you can purchase extra sensors separately.

PressurePro App Program Mode PressurePro App Tire Readings

To connect each tire to the PressurePro app, simply tap the tire on the diagram that you want to set up, and then install a sensor on the corresponding tire's valve stem, replacing your existing valve stem cap. Once each sensor is installed, press "Save" to connect the sensors to the app and start getting pressure and temperature readings for each tire.

The app also lets you program different towing setups. Give each of your rigs a unique name with unique settings, making it easy to switch back and forth between different vehicles or trailers. This makes the PressurePro FX ideal for people who own multiple trailers. You can monitor your boat trailer when you head to the lake for the weekend and then monitor your landscaping trailer when you go back to work the following week.

Customize Your Notifications

With the PressurePro app, there are 5 different real-time alerts designed to warn you about potential problems with your tires. You can set the alerts to be received as push notifications, so you don't have to leave the app open during your entire trip. You can also customize the parameters for each alert to your liking:

  • Extreme and Slight Under Pressure: 10 percent to 40 percent
  • Extreme Over Pressure: 10 percent to 40 percent
  • Cross Axle: 5 percent to 30 percent
  • High Temperature: 150 F to 212 F
  • Lost Signal: 10 minutes to 60 minutes

For each alert, you can program the sensitivity of the sensors to determine when you'd like to receive notifications. For instance, you can program the app to alert you if your vehicle's tire pressure drops 10 percent or more below the baseline pressure that you set. If 10 percent is too low, you can move it up to 15 percent or 20 percent.

Or you can set up a Cross Axle alert. This notifies you if there's a significant discrepancy between the tire pressure readings on each axle, which can cause uneven wear on your tires.

You can also receive a notification if one of your tires reaches a temperature of 180 F. Or bump it up to 200 F if you're driving through the desert.

In addition to receiving detailed notifications on your phone, the Pulse FX box will blink red whenever there's a potential issue, alerting you to check your device.

FX4K JR Products Pressure Pro FX 4 - App Based 4-Wheel Tire Pressure Monitoring System

California residents: click here

Customer Satisfaction Score:

Customer Reviews

PressurePro FX 4 TPMS for RVs and Trailers - Smartphone Display - 4 Waterproof Sensors - 372FX4K

Average Customer Rating:  4.5 out of 5 stars   (17 Customer Reviews)

Use your smartphone to monitor the tire conditions on your RV or towable with this TPMS. Customizable app sends you real-time alerts about your tire pressure and temperature levels. Waterproof tire sensors are well-suited for boat trailers.


Work great and provide accurate information! However, initial pairing was difficult and there is no way to shut down nor remove the batteries from the sensors for winter storage.

Jim G.


Great sensors! A little funky to set up initially but work great! I had a blowout yup Chinese tires - long gone now! last summer and lost 1 sensor. The company replaced it no charge. My only complaint is once activated you cannot turn them off nor replace the batteries.


Product was awkward to use. Hardware was inconvenient and unsightly. Soft ware interface with phone was not user friendly. I no longer use the product. Device was a waste of my money.


We're very happy with the Pressure Pro FX TPMS. We run sensors on both truck and trailer. We've been able to adjust them for use both on and off road (when aired down).


I’ve been a customer of PressurePro for many years. The two different PP displays I’ve had experience with have been to me ‘just ok’. Kind of clunky may be a better term. The new FX system however is a huge upgrade. The install was simple and straightforward. I love that my iPhone becomes the display. All the tire pressures and temperature seem to be way more accurate. What a huge improvement. I haven’t taken a trip with the new FX system installed but I’ll be interested to see if this new system illuminates those pesky dropped signals.


Great trusted professional grade produc t.


I'm ditching my 2017 Eezgo TPMS 816 system for this. This is AMAZING. FAR easier assignement/pairing of sensors, much clearer and easy-to reqad interface. And it's on a device I already have mounted, no second screen and mount needed! I started out with the four sensors and I just bought 10 more for two trailers!


Easy install and setup. My only concern is the power socket that plugs into the 12v socket (lighter plug) is long and takes very little effort to be dislodged thus losing power to the system. Installed in a 2018 Silverado 1500 to tow a 2021 5th wheel camper.


installation and setup was super easy. pressures and temps from my 36 ft. fifth wheel came up easily.


Item looks to be as advertised.










See what our Experts say about this JR Products TPMS Sensor

  • Do I Need Cell Phone Service for the PressurePro FX for RV to Operate
    The PressurePro FX 4 # 372FX4K communicates with your phone via Bluetooth technology, so whether or not you've got cell phone service you'll still be able to monitor your tire pressure with this system. I've linked a short review video of this system for you to have a look at.
    view full answer...
  • PressurePro FX 4 TPMS for RVs and Trailers # 372FX4K be Used with Rubber Valve Stems
    We've spoken with PressurePro in the past about what types of valve stems can be used with their kits like the part # 372FX4K that you mentioned and they told us that the only kind of valve stem that CAN'T be used is the longer style ones. So rubber valve stems would work great.
    view full answer...
  • Is Rear Window Better For Antenna on PressurePro FX 4 TPMS
    Sure due to it being that much closer, it would be ever so slightly better to mount the antenna on the back window when using the PressurePro FX 4 TPMS for RVs and Trailers - Smartphone Display - 4 Waterproof Sensors # 372FX4K.
    view full answer...
  • Powering PressurePro FX 4 TPMS with Vehicle with Only USB Power Sources
    I checked and your 2021 Ram 1500 does not have a cigarette lighter style power port so to use the PressurePro FX 4 TPMS for RVs and Trailers - Smartphone Display # 372FX4K you'd need to source a USB to cigarette light power adapter which are pretty easy to find elsewhere online as we do not carry them.
    view full answer...
  • Troubleshooting A PressurePro TPMS Sensor That Isn't Reading Pressure
    Since you swapped out the PressurePro FX 4 TPMS for RVs and Trailers # 372FX4K sensor with another and still got an error with just that one wheel you most likely just have a bad valve core and it's not allowing air to pass through to the sensor for it to properly read the pressure. I recommend first replacing the valve core and if that doesn't solve the issue then fully replace the valve stem.
    view full answer...
  • Would PressurePro FX 4 TPMS for RVs and Trailers - Smartphone Display 372FX4K Work on Travel Trailer
    Yes the PressurePro FX 4 TPMS for RVs and Trailers - Smartphone Display # 372FX4K that you referenced would work great installed on a travel trailer that has 4 wheels. That's exactly what they intended this kit to be used on so it would work well for you. I attached a review video that shows it installed on a motorhome but it would overall be the same thing if it was a trailer instead.
    view full answer...
  • Can PressurePro FX 4 Be Used with 14 Sensors/Wheels
    If you needed to view 14 total tires between your truck and trailer you certainly could with the part # 372FX4K. This comes with 4 sensors and to add more you'd need the part # 3722SEN which is a pair of sensors. You'd need to order a total quantity of these of 5 of this part number.
    view full answer...
  • Can the PressurePro FX 4 TPMS for RVs and Trailers Communicate With 12 Tires
    Yes, the PressurePro FX 4 TPMS for RVs and Trailers # 372FX4K will be able to communicate with all 12 tires. This system can handle up to 40 tires. The PressurePro FX 4 TPMS for RVs and Trailers # 372FX4K includes 4 sensors. You can use the Waterproof Sensors for PressurePro FX TPMS # 3722SEN to add the additional tire sensors.
    view full answer...
  • Would There Be Significant Benefit From Going With A Wider Rim?
    That is a good question. There really is not any significant benefit from increasing the width of the rim. Especially from a safety standpoint, you are still using the same ST215 tires, so going to a slightly wider wheel is not going to have any noteworthy benefits. The tire you are using is the important part, and you are absolutely right that going to a larger, higher rated tire will increase tire safety margins. The highest rated 215/75-14 tire we offer is the Provider # TTWTRTM2157514D....
    view full answer...
  • Will Switching 5.30-12 Bias Ply Tires for Radials Help Prevent Blowouts
    A 5.30-12 Load Range C tire has a load capacity of 1045 lbs each or 2090 lbs per axle which is more than sufficient for a trailer/boat combination that weighs 1850 lbs. Excessive heat build up is the number one cause of premature tire wear and failure. Exceeding the weight capacity, not correctly inflating the tires and exceeding the tires speed rating can all cause the temperatures of a tire to spike to unsafe levels. First, I'd recommend you confirm the fully loaded and ready to tow...
    view full answer...
  • Water Proof Tire Pressure Monitoring System For A Ram 2500
    No, we will not have any tire pressure monitoring sensors that will work with your Ram 2500s built in TPMS that is waterproof. We do have The PressurePro FX 4 TPMS for RVs and Trailers # 372FX4K which allows you to use your smartphone to monitor the tire conditions on your RV or towable with the TPMS. The waterproof sensors can be fully submerged under water. The sensors will thread in directly onto your tire's valve stems and connect to your phone's Bluetooth. You can get additional...
    view full answer...
  • Recommended Weight And Sway Distribution Hitch For a 1996 Jayco Jay 1207 Pop Up Camper Trailer
    I recommend the Equal-i-zer Weight Distribution System # EQ37040ET for your 1996 Jayco Jay 1207 tent trailer. This system uses a built in 4 point sway control to reduce trailer sway and there is no need to remove any parts before backing up and maneuvering your Jayco. This system is rated for trailers up to 4,000lbs with a tongue weight up to 400lbs. The information I could find on your Jayco puts you at 1,800lbs total weight so that leaves you room to upgrade your camper in the future....
    view full answer...
  • Is Voyager VOM43HDCL1B Wireless Camera Compatible With TPMS
    Unfortunately, the Voyager # VOM43HDCL1B camera system you'd asked about doesn't have the provision for adding a TPMS system, but we DO offer a solution that's more like what you're looking for. You might be interested in a TPMS system that uses a smart phone as the monitor/control unit like the PressurePro # 372FX4K. This won't work with the camera system you have, but assuming you already have a smart phone, the system won't add an additional piece of equipment in the vehicle cab. The...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Adam E
Installed by:
Adam E
Employee Jameson C
Expert Research:
Jameson C
Employee Chris R
Video Edited:
Chris R
Employee Leah S
Updated by:
Leah S
Employee Mike S
Written by:
Mike S

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