B-QtechSolar Power RV Tire Pressure Monitoring System with Repeater, 6 Sensors TPMS Wireless Monitor with for Trailer Truck Tow Motorhome, Real-time Displays Pressure Temperature 0～200psi

The media could not be loaded.  [See updates tacked onto the end]Packaging is over the top! Unit is really very nice. Instructions are a bit confusing.I tried to follow the "pairing" instructions and never did get that to work. Looks like they paired up by themselves without my doing anything. Sadly though, my attempt at pairing caused the no-data "- -" display. I decided to try driving around a bit and that seemed to get things back on the rails. For unknown reason, they tell you to inflate/deflate the tire while pairing. How do you do that with the caps in place? I loosened and tightened the caps instead, but that made no difference. I recommend ignoring the pairing step -- it should just work for you. Or just drive the vehicle around some and it will sync up.I still don't know what some of their instructions are trying to say. I guess I will eventually figure it out. Like "dF"? What dF? And what on earth is the "tire exchange interface" and why would I need it?I really like how it monitors tire temperature -- added bonus!I wish they had provided adhesive velcro for the dash rather than two sided adhesive, which makes it non-removable. I might want to take it off the dash occasionally.I am not excited about the fact I need to keep the little wrench around if I need to adjust the tire pressure. Do I really need those backing nuts? I wonder what would happen if they were left off?Suggestion: replace the backing nuts with thumb wheels slightly larger than the caps themselves. Operating that little wrench is tricky, not losing it is even trickier.I sure wish I had this two weeks ago before I drove 200 miles on a low tire without realizing it. I suspect this device will pay for itself in savings to tire damage.Very happy user.Update: Now 4 days later and I decided to get a second unit for my other car. I still wish the locking nut was a thumbwheel, but I just don't want to go any further without knowing my tire pressures at all times.Update 2: Package arrived and 30 minutes later, all installed on second car. This one was more difficult since the stems were a tad shorter and the locking nut is awkward to tighten, but at least I didn't waste time pairing things up.Suggestion for installation: turn on your base station before installing caps, then verify each cap as you install it that its matched with the correct tire on the display. It will read 00 for the pressure initially.Update 3 (9 months after initial install): Finally had a few batteries go out (3 of 4 at the same time). Replacements cost about 60 cents each. You can pay a lot more, so shop around. Some people complained there's no tool to access the battery, but I figured out to use the plastic locking ring flipped over. I attached a video demonstration.Update 4 (21 months after initial install): Unit continues to work fine. I still do not understand how to know if/when a given sensor battery is low. Description says system has "sensor battery low power alarm", and I have heard this on occasion, but I cannot tell from the base station which sensor battery is the culprit. Please reply if you know the answer!For now, I can sort of tell which sensor battery is low by seeing that the temperature reading differs from the other 3. But that is not 100%. I recently figured out I can simply loosen all 4 caps and see which ones go to zero (my caps read 0.4 psi when loose). If the reading doesn't update to zero, battery must be bad. Of course, retighten your caps after doing this test. I recommend doing this any time you suspect a low battery and/or before any long trips. Keep some spare sensor batteries in your vehicle (CR1632 Battery 3V Lithium Button Cell Coin).

Easy to install. However, the first one I got was DOA. It would not turn on, then when plugged in the screen started flashing and was all messed up. the replacement I got was an opened box, and was missing the tools that are included to remove or install the device. the third one I got looked like it was going to be awesome, came on, easy to install and was over all looking awesome.... until I started my road trip. I started receiving an error I-I-I or HH maybe... well this error is not listed anywhere in the instructions, so that is just awesome!, this one would reed for a bit, then not reed, then display that error. 2 other probes also had issues as they would read way different pressures, I would be going down the road and the pressure reading would suddenly drop from 70psi to 45, and an alarm would sound, then a few min later, it would go back up to 70... this was happening on 2 different probes, so 3 out of 6 probes seem to be having problems. end result was every 10 min or so I would have to clear an alarm... additionally the range extender... not secure it does anything. it seems to have a button on the front (that does nothing) and the light always is red... so not clear if the thing is working or just draining battery.

Received the item one day before I expected. No big deal installing the sensors but Immediately noticed the measurements were steadily 2-3 PSI above what my auto air pump was showing. The after the first trip my left rear sensor stopped working. I contacted the seller and they promptly replied and recommended to reset it to factory settings and reinstall the sensors. I did that like 4 times and still no dice. Then, when I was about to give up and return it, I decided to give it one last chance and try checking the internal battery of the sensor and found out it was measuring like 1.25 V instead of 3V as supposed. So I exchanged it for one of the spares coming in the package and bingo! Everything started working fine, except for the above-referenced discrepancy on 2-3 PSI above what my meter pump reads. Overall, very happy for a week now with real-time TPMS display, easy to read, small, fits anywhere. Just a little tricky to adjust the safety nuts for the sensors so they don't get stolen and then remove them to add air to the tires.

Lo compré y lo puse en mi auto todo bien, pero cuando quite todos los sensores para cambiarlos a otro carro, ( casi un año) ya no los reconocia y no aparecía nada en la pantallita.

Still working 3 years after purchase on third set of batteries with each set lasts about a year before needing replacement. Has been great at identifying slow leaks in tires before they become a problem.

El dispositivo es de muy fácil colocación, la precisión no es tan exacta pero cumple su objetivo para detectar neumáticos con baja presión e identificar cuál es el que requiere atención. Las alarmas son claras. La duración de la batería es excelente. Muy recomendable.

Use este medidor de presión de llantas para un viaje en carretera de 4 horas, al principio supuse que funcionaba bien, llene de aire mis llantas a 35 libras adelante, 45 atrás ayudándome de un calibrador, la información variaba de +/- 3 libras y no le di mucha importancia, pero después de un rato manejando ví como la información no era precisa, de vez en cuando se desconectaba sin razón y volvía a checar mis llantas con el calibrador, pero aún así mostraba información equivocada, en un momento uno de los sensores en el viaje dejo de actualizarse y mostraba una presión de llanta de 0~ 32 cuando en realidad era de 45 libras, terminé mi viaje y ese sensor en específico jamás se actualizo hasta que lo quitaba y lo volvía a poner, a veces funcionaba eso y a veces no, probé todos los sensores en la misma llanta y todas daban mediciones distintas, a veces de más y de menos, al final decidí devolverlo porque no es nada preciso y dejaba de funcionar a medio camino, ahorrense la compra y la frustración de tener que recargar de aire las llantas porque para hacerlo es un proceso demasiado tedioso si se instaló correctamente. En verdad esperaba que funcionara pero al final no fue así.

I ordered it for my SUV to jave better check on tyres air pressure 24/7.Working pretty up to the mark. Solar charger works as well as wire charging. Batteries are a bit hard to find in market.Overall works well bit please don't expect much in this price. Alright for a starter