TST 507 Tire Pressure Monitoring System with 2 Cap Sensors and Color Display for Metal/Rubber Valve Stems by Truck System Technologies, TPMS for RVs, Campers and Trailers…

I bought this to use on the rear duals of my Motorhomes. The first problem appears as I was following the written procedure for assigning sensors to the wheel position. 3 of the 4 linked just fine but the 4th didn’t so I returned the whole kit and ordered a replacement. In that kit none of the sensors would assign to a wheel position UNTIL I placed the sensor at the lower left corner of the display AND held it there until I had pressed the button called for in the manual. Maybe I’m stupid, or maybe the manual could be clearer. Im sticking to the latter and the vendor could have saved a return by clarifying the instructions. The second problem is that the suction cup that is supposed to allow mounting the display on the windshield doesn’t, but it works barely okay as a brace to hold upright when sitting on the dash. Finally, with all the tires set to 50 psi with a digital gauge, the two left tires show as 50 psi on the display while both right side tires show as 49 psi. I can live with that. I might get them all to match by using the remote antenna. That’s too much work to install for a 1 psi difference. Other than those things it work fine reporting temperature and pressure while moving.

Works exactly as it should. Like the expandability of the system as well.

We have this for our class C Rv and would never drive it without these. This is a must have for safety. Easy to install and use.

I have just used these a short time. but what a relief to know that the dual tire pressures and proper. It is great to know there is a warning if the tire overheats hopefully before a blowout. I read about tires gone flat and coming apart doing damage to your motor home and will get a warning while driving if this happens. It is also great that you can set up the monitor indoors at the table and not have to be out in the cold doing it. The special wrench to keep the sensors on the valve stems are great also. I also like that the monitor does not have to be mounted up on the windshield to do its job.

Difficult to read in some sun conditions but just move it somewhere else and it is fine. Color monitor is useful. Alarm when limits exceeded will definitely get your attention. Havent tried to remove the caps yet, so not sure how easy or how much air will escape when I do yet. Otherwise seems perfect. Works without repeater for 36.5 foot Class A RV. Very happy with this purchase.

The TST may well be among the best available. My rating is closer to 5 stars than 4, but I am not willing to give the product full marks. Lesser priced items had too many reported issues for my comfort level, and one I had purchased did not have the range required for use with a decent sized fifth wheel. I took the plunge on the TST. It worked fine right out of the box. Tire temperatures seem plausible. Tire pressures were mostly within a degree or so to other trusted sources, but one sensor seems to be off by a few degrees. Same with the tire pressures. While close within one PSI or so, not all sensors agree with a trusted calibrated pressure gauge. This does not make the system unusable, but is a little irritating at this price point. Itd be nice if they could be field calibrated. I did use the range extender and did not test operation without it. It can take a little time for the signals to be picked up but seem to hold well once acquired on a 35 trailer. It would be a lot better if the display be configurable to match the tires being monitored instead of having the generic and very busy display. This could be readily accomplished with some creative programming and perhaps a different more modern display. The display seems to work well enough and has good visibility in most lighting conditions. I would prefer the caps have a lower profile to further reduce chance of damage. Perhaps that would only be a serious concern in off road conditions.

Easy to install, accurate and compact. We discovered the internal TPMS on one of the tires on our tow vehicle was not reading accurately when we installed this one over it

From experience, having a tire failure while towing a vehicle is catastrophic. This product provides much better control. It’s a Must Have.

Had a blowout on our towed vehicle behind a 36 motor home. Had no idea until a trucker pulled next to me, honked his horn, and motioned toward the rear of me. The tire was completely off the rim. Decided I needed to do something to monitor these tires so purchased TST. Put the sensors on the wheels of our vehicle which is being towed. Tested them out and was absolutely amazed at how it displays the accurate tire pressure and heat of each of my tires on the monitor located on the dash of my RV. I had a slow leak on one of the tires and when it got to 29psi, an alarm went off on the monitor. Very, very impressed. Plan to purchase more to monitor the tires on my RV. This system will monitor your RV as well as your towed vehicle.

Easy to install and program. Can be mounted anywhere. The battery lasts a long time and recharges quickly.