VESAFE Wireless Tire Pressure Monitoring System, Universal TPMS with Real-Time LCD Display, 5 Alarm Modes, 4 Advanced Waterproof Sensors, 2-Year Battery Life, Cigarette Lighter Plug, 0-6Bar/ 0-87PSI

They work great and super easy to install but dont be fooled. After leaving them on your car for a year be careful taking them off. They completely corrode the valve stem and i broke two of my stems off while trying to remove them. Also the gasket you put on doesnt do much for keeping them dry, thats the whole reason i had to remove them to begin with. Bought a replacement to switch out the weather damaged ones but cant even install new ones on since now i have no valve stem to install it on..UPDATE: customer service got in touch with me saying they will fix the issue two months ago and after providing them with my personal information they cut communications and are not responding to my emails.

I bought this for the single purpose of monitoring the tire pressure in my single axle RV trailer and without having to spent a lot of $$$ on more expensive monitoring systems. My towing setup is not very long (total length of car and trailer is 38 feet) so the display unit is able to communicate with the cap sensors and I get the readings as expected.However, the main challenge I had with this is that I only wanted to use 2 of the 4 cap sensors because all I wanted to see was the pressures on the single trailer axle. I have no need for more. The problem with this is that the display unit really expects 4 sensors and so it will beep forever, because obviously it is getting a zero reading from 2 of the 4 sensors. There seems to be no way to turn off the beeping or to configure the unit to only use 2 sensors.To work around it, I installed the other 2 cap sensors on my vehicle rear tires. The problem with this is that the car has a cold pressure of 33 PSI and the trailer has 60 PSI. This is important when you program the unit when you set the "High" and "Low" pressures, because now you are mixing 2 sets of tires with different pressure requirements. Not a big deal to me, I simply picked the highest and lowest values available on the display unit. I just want to be able to take a peek at the display once in a while to check that the pressures are still OK. I don't need it to beep or throw a tantrum; just sit there quietly and display values.If it had a feature for disabling the sound, or the ability to configure it to use only 2 sensors, this would have been almost the perfect product. Sometimes the display is a bit hard to read, especially when the sun points directly on it, but otherwise it's a fine functioning system that will work for most people.EDIT: I changed from 4 to 5 stars. I contacted support and within hours they replied with a solution to program only 2 sensors instead of 4. Basically you program 2 sensors twice. For instance front left and rear left you use the same sensor. Since a sensor can be programmed only once in the unit, the previous code will be removed. As you can see in the attached picture, my unit is now programmed with only 2 sensors, which is exactly what I needed.

Three years and 100 thousand kms. -45 to 35 degrees celsius. Worked as presented with few issues. Those who complain about caps corroding on must realize that brass and other metal valve stems are not compatible. Galvanic corrosion results. If Vesafe is used with non-brass valve stems a small amount of anti-seize compound should be used on the threads. The locking nuts must be removed to use airchucks and pressure gauges and are more of a nuisance than they are worth. Under certain lighting conditions display can be hard to read. Keep small penlite flashlight to shine on display when needed. If power point socket puts display at bad angle, "Amazon" sells extenders and angle adapters for "Cigarette Lighters". Vesafe can be used in addition to factory TPMS. Consider Vesafe an additional feature that helps you maintain proper tire pressures all year, as pressures fluctuate as temperatures vary.

For $85 I'm very happy with these. Much cheaper then factory TPMS sensors that cost much more and can't replace batteries when they die. Also love I can switch these to my winter rims in 5 minutes and not have to purchases an extra set of TPMS sensors for them.These are accurate within about 2psi (readings fluctuate within 2psi on regular basis randomly between 4 tires). Locks are a bit flimsy and I was able to unscrew the sensors (with heavy force) even when locked on tight. Think of the locks as deterrents and you won't be disappointed. Doubt anyone will steal these anyways.

Très facile à installer, fonctionne depuis au moins un mois. Il a déjà détecté 2 fuites d'air dans 2 pneus différents, c'était des clous parce qu'il y a du pavage et toujours des débris par ici. Sur des pneus de 18 pouces,une fuite d'air ne paraît pas du tout Merveilleux