【Upgrade Version】Rocboc TPMS Tyre Pressure Monitoring System, Tire Pressure Checker Solar & USB Rechargeable, Auto Alarm and Real Time Detection, LCD Screen with 4 Waterproof External Sensors for Car

It's fantastic value and even comes with the proper brass locking nuts. The previous generation devices had aluminium and would oxidise after a while and there was no way to take them off if that happened severely. Expensive problem. These are brass though on this model, and so I'm hoping there's no problems ahead. There's a cool retro quality voice notification on this device too, which I think is much better than the boring beep on my previous system.I have only one and a half criticisms:1. Backlit display brightness could be brighter for sunny days.2. Due to exposed position on the dashboard, strong sun exposure heats things up, which is not good for the battery life. A lighter colour or some kind of thermal hood would maybe protect the non solar cell part of the body without creating too much reflection risk in the windscreen? It's a challenge for the engineer for the next generation, but this device is amazing value, as it is.1 year on...The sensors are still working for me, but unfortunately, after not using the car much over the last few months on lockdown; the sensor caps have got stuck on the valves again. Unless they switch to a plastic thread; I think this will continue to be an issue. I'd definitely recommend adding a calendar reminder for 4-8 weeks repeating, to make sure you loosen and re-tighten the caps, even if your pressure has held ok, to prevent the caps from sticking on. I'm hoping the next generation of the design will change the cap thread to plastic. Something to look out for of buying a set of TPMS sensors again in the future.Another quick note. Often with these, I find there's one or two of the sensors which either come with a poor battery, or perhaps the difficulty of transmitting through the car body, wears the battery down and the sensor will stop working. This will look like the signal is still coming, bit no info is updating for that corner. I think the unit pretend that there's no problem, to avoid customers returning it straightaway 😂. Anyway, keep an eye out for the pressure and temperature not changing on one corner, when all the others are. It's a bit of a safety risk tbh, but spottable, so not too serious.

Extremely to install. Screw on the sensors to the tyre valves and it's done.Was working straight out of the box, no need to charge up the unit.Good range, I fitted the sensors on the car which was on the driveway, I then switched on the unit in the garage and it picked up the signal from all 4 wheels.Accurate readings, they display to within 0.1 bar of pressure gauge used when inflating the tyres.Display shows uniform increase in pressure in all 4 tyres after a period of driving, and the increase is dependent on time driven & speed. This is as expected and gives confidence that all is correct.I was expecting it to be auto on/off but it isn't, it has to be manually turned on & off. It's not a problem.I have had it fitted for over a month now and never needed to charge it via the cable, the solar panel works just fine - even after I forget to tun it off.The display is difficult to read in bright daylight - this is my reason for not giving it 5 stars.

UPDATE - Spent Sunday afternoon cutting these off the tyre valves. Was a nightmare. Make sure you cut rather than break apart as it will end up deflating the tyre which happened on my first one. Beware and if you haven't checked yours yet then do it now while you have tools and not stuck in a motorway.The RR sensor has stopped working ..... well the pressure reading has albeit the temp seems to work. So took it off changed battery etc but still the same. The other issue when checking the other 3 sensors they appear to have rusted onto the tyre valves. I cant seem to turn them by hand anymore. Will try using some WD40 and tools but suspect i will need to destroy the sensor to get them off.When working it is invaluable and helped me monitor and identify a sticky brake caliper ...... but if its knackered in less than a year AND welds itself onto the valve then its not just useless but could damage your tyres.

I own a motorhome that does not have a spare wheel so I was looking for a way to easily measure tyre pressures on the go.I bought one of these hoping this would be a solution.I fitted the sensors very easily and mounted the unit in clear view on the dashboard. I was carefully to thoroughly clean the plastic first as the dash had been treated with silicone so nothing would stick properly.1st time out it recorded the tyre pressures which was just what I wanted.However on a long descent it started to beep and flash first fom the nsf sensor then of then both rears I wasn't sure why but I could see the tyre pressures were OK.It turned out that the sensors were warning me that the temperature was rising caused by a long period of applying the brakes.I soon rectified this by setting the temperature warning limits. This is an added feature I was not expecting.Overall I am extremely pleased with the setup and takes away the worry of slow punctures etc on a long journey.