M12-3 model

I bought this system 2 years ago. It since it is wireless and solar powered it installs easily. It was it has worked flawlessly and displays tire pressure and temprature for each tire on the same display (no rotating display that you have to wait for each tire to display in turn) and just a quick glance tells you what you need to know and the solar charging is ample to run it during the day and all night with the back light on all the time in the dark. Setting the customizable lower and upper pressure limits, the other it has alerted me to the a slow leak in the left rear of that otherwise I had no reason to check. Finally, just a quick glace lets you know that the pressure is balanced side to side and the correct pressure front and rear before you get on the road.

Overall, this is a pretty decent item. I've only had it for 6 months now, but I really like it. It's especially nice because it's pretty accurate and costs ~$50-60 (wait for a deal) and I don't have to waste money going to get new sensors replaced for $100+ a TPMS sensor. Overall, it was worth the purchase as it's very convenient to see the current pressure/temperature for each wheel (if you don't have that with your vehicle already). This product works by replacing your cap for the air valve with a sensor and nut. Once the cap is off, you thread on the [locking] nut and then put on the sensor hand tight. You then "loosen" the nut which winds up using friction to keep the sensor tight in place so someone (without the included 1/2" offset wrench) cannot remove the sensor(s). It takes an extra 10-20 seconds to add air into each tire because of this mechanism, but it's not a big deal. The unit itself comes with adhesive to secure to whatever surface you want which is very helpful so it doesn't move around easily. It constantly charges via the sun. Something to note: I believe the unit turns on when it senses vibration (via closing a door or starting the engine)--but can be turned on (e.g., the display) by clicking any of the buttons. It will then show whatever data was last recorded from your previous trip, BUT once the car moves it takes about 5 seconds of the wheels rolling to update the data (automatically) to the currents stats. Just be aware of that. It doesn't bother me, personally. The description says it has an accuracy of +/- 3 psi. That's an absolute range of 6 psi--a lot of room for error for my liking. Despite that error being apparently similar to other items on Amazon, I have found with my trusted digital tire gauge that this unit reads +/- 1 psi most of the time. That's really good. There's a lot of settings on the device that you can customize to your liking. Other reviews have stated that once it starts beeping (i.e., the tire pressure drops below a set threshold), the beeping will not stop until the pressure is increased. That is FALSE. All you have to do is hit one of the buttons on the top and it stops the beeping. ***Due to the small space you have to tighten/loosen the "security/locking nut", you need the included 1/2" offset wrench (feels like just sheet metal or the type of wrench that comes with furniture). I have an assortment of tools and cannot find a tool that would suffice. Maybe a small open-end 1/2" wrench that is bent or an open-end crowfoot could do it. But a flare nut crowfoot or standard open-end wrench will not do it. I cannot find the included wrench anywhere; so if you lose it, it might not be fun. I WISH THEY WOULD INCLUDE 2 OF THESE WRENCHES IN THE PACKAGE.

After doing a great amount of research and review reading, I bought the Tymate solar TPS for my RV before picking it up. When it arrived, I tested it out on my car. What a pain. The sensors needed to constantly be re-synced, or tire positions changed. The buttons on the unit didn't function, and I would get stuck at a point in the menu and not be able to get out. The instructions were poor, and the unit did not respond according to the instructions. I spent over almost two hours putting things on, taking them off, putting them back on, taking them back off, resetting, reconnecting, and the until still didn't display things correctly or function correctly. I thought about getting a replacement or possibly upgrading, but if it takes this long to diagnose an inexpensive Chinese piece of junk, I'm not going to waste any more of my time. I'm buying a more expensive reliable unit with a respected name and reputation. You get what you pay for. Don't buy this unit. UPDATE - against my better judgement, and largely because the other TPMS I was interested in was twice the price, and because there were so many good reviews, I decided to give this TPMS another go and I ordered a replacement hoping that I got a lemon the first time. The good news is, so far, so good. I have tested it on my Prius and everything is working as it should. However, I bought it for a new travel trailer that I will be picking up in a few weeks, so I'm reserving final judgement until I use it on the trailer. I'm raising my initial rating from 1 star to 3 stars. Based on current functionality I would give it 4 stars (not 5 because the instructions are terrible), but I don't think I should have had to order a second unit to get one that works, so the 3 star will remain. I actually think part (not all) of my former problems were caused by the very poorly written instructions. I mean, there's not even any mention of the fact that the sensors have a CR1632 battery that you can change when it goes dead, much less how to do it. The instructions talk about standby mode. What I have learned with this second unit is that standby mode is when the unit is on an functioning. It isn't a special screen or mode you have to get into with the push of some button sequence. The instructions talk about holding the '-' and 'set' buttons together. DON'T DO IT!!!!!!! It's the factory reset, which knocks out the units recognition of the individual sensor codes. I think this is part of what messed me up with the first unit, although I still maintain that buttons weren't working when pressed. I also observed that you can't turn the unit on and off when the USB power cable is attached. The unit has to be unplugged, running on solar, to be powered on/off. By the way, you hold down the '-' button for 5 seconds for that, until you hear a beep. I'll write another update in a few weeks after I've used the unit on my travel trailer trip. UPDATE 2 - Just returned from a 2 week trip using this TPMS. It worked flawlessly. I have no complaints. I would have adjusted my rating up to 5 stars, but left it at 4 because of the first unit I received that didn't work. After using this, I can't think of any reason to put out a lot more money for a more expensive unit. I have a 24' trailer being towed by a Toyota Highlander. Reception was not an issue at all. I'm thinking about getting another set for the Highlander.

Works great. My favorite feature is the solar powered monitor. I put some anti skid rubber on the bottom and just set it on my dash. Good to go! I also think it's valuable to see the temp as well as pressure. This system gives a lot of peace of mind towing my camper.

After being told by my car dealer that there were no aftermarket TPMSs(Tire Pressure Monitor Systems) for my 2002 truck and spending $300 to have internal sensors installed in my 2015 car winter tire/rims, I discovered many aftermarket external TPMSs online. I could have returned my $300 internal sensors, but I decided not to because I like my car being able to monitor my summer and winter tires (on separate rims, so I only need to have the summer tires/rims swapped out with the winter tires/rims. Easy. Now, I wanted to have the external TPMS for my 2002 truck since internal sensors will not work with my truck. So I bought these. However, I wanted to have this TPMS also for my Prius as the factory internal sensors only send an alert when *only 1* of the 4 tires has *only low pressure* and no other information. It is a bit of an unnecessary pain to have to check all 4 tires for low pressure, if the low tire is not obvious, which often it is not. I decided to install this TPMS on my Prius, and I am very happy I did. Soon I will install this TPMS on my truck also. Installation was a bit of a pain, because I was playing around with all the buttons before installing the sensors and I goofed up the assignment of the sensor with the different positions they are labeled for: Front Left, Front Right, etc. I took me quite a while to reassign the sensors to their correct tires, which turned out to be very easy: just select a tire position and unscrew and rescrew the sensors. The monitor assigns that sensor to the correct position automatically. The video instructions online are spoken in Chinese (?) and the English subtitles are very minimal and nearly worthless. This needs to be addressed! Should have subtracted one star for this, but I am too happy overall with this TPMS. Both the monitor and the sensors are *much* smaller that I had expected them to be, and very happy about that. The hub caps on my Prius allow for very little room around the valve stems, but these sensors "just fit", fortunately. My box contained 4 dust caps for the sensors, but they are very thin and relatively flimsy, so I don't know if they will stand up very well to the changing seasons. As for tire pressure accuracy, I filled and checked my tires with an expensive Astro tire pressure gauge. I set them all at 38 PSI, and the TPMS monitor read all 4 perfectly at 38 PSI. Can't get much better than that! Of course the pressure changes while you drive, but that is normal. I changed the default setting from Bar and C to PSI and F. Very easy to do. It would really be nice if these sensors could be monitored while *not* driving, but I get it---that they need to conserve battery power and put them to sleep when the car is parked. You have to first drive "12.4 mph" for the sensors to activate and send their signals to the monitor. The monitor activates automatically when receiving signals from the sensors; so you don't have to turn it on every time you drive. The backlight also activates automatically in low light. I decided initially to not install the brass nuts used to supposedly secure the sensors tighter. Due the different in the brass nuts and my aluminum(?) valve stem, I am concerned about galvanic corrosion over time. On the other hand, it appears the the female connector on the sensor is also made of brass, so there might be corrosion anyway. Hmmmm, so I might install the brass nuts later, since leaving them off might not make any difference. The sensors do seem to be very snug when tightened down by themselves, with any air leaks. You cannot set the high and low pressure limits independently for all 4 tires. You set the *front* tires limits, then you can set the *rear* tires limits and then the spare tire limits. That works for me because the readings from the 4 tires are still *read independently*, telling you exactly which tire has dropped before whatever limits were set. According the another review this model is the latest, a monochrome display replacing the older, apparently faulty color display. OK. Actually, a color display could be distracting while sitting on my dash. I am hoping I will never need the USB cable to power the monitor. (The instructions say to charge the monitor with the USB cable before using the first time. OK; I did that. My manual says that it can "Monitor up to 7 tires." I don't know how that would be set up. I plan to install this TPMS on my 4-wheel truck soon. I also have a 2-wheel RV that I tow with the truck. When I do that, I will simply take 2 of the sensors off of my car and put them on the RV! Summary: I am quite happy with this TPMS, and if it holds up over the years it will be one of the best accessories I have ever bought for my car and truck/RV. To be able to monitor even just the air pressure and have an alarm go off if the pressure drops below the programmable limits I set is just great.

They get stuck on the valve stem and then the threading strips out. I needed to put air in my tire and when I tried to unscrew the valve cap sensor- the plastic shell containing the battery and electronics unscrewed instead. the tiny rubber gasket instantly shredded. I could not put air in my tire. I had to get pliers and it was really aggrevating to take these off, and once I did get them off they would not go back on and the threading on the inside of the sensor was damaged and my valve stem threading was also damaged. I did not cross thread them when I installed them. they went on easily and smoothly and they work well, but you know, it was spring when I put them on and now its the heat of the summer and the threads would not let go and the plastic is too weak. SO yeah, they work fine until you need to remove them to put air in, and then you're in a bad situation, you get one twist with the pliers and the air starts leaking out and or god forbid you get a flat and cant get the thing off to re-inflate after you fix it. bought in feb 2025, broken by May 2025

About a year and half ago I bought 2 of these TPMS units for 2 of my cars; although they had a different brand name (than Tymate) on them. They have been very useful since they work good and save you from not having to manually check the tire pressures every week or two. This Tymate unit is an updated version of the 2 I already have. They fixed a firmware bug (not an important bug) and put a regular backlight LCD monochrome display in it. The color display in the older units would be slightly affected by summer heat; a few segments would quit working until it cooled off. You could still read it though. With the regular LCD display that shouldn't be a problem. The best part of these units is you can buy a fifth sensor and put it on the spare tire. The head unit will show the pressure in the spare as well as the 4 main tires. The displays alternate. They don't mention that with the Tymate unit but I had a spare sensor from my first 2 units and it works with the Tymate also. The sensors on the main wheels immediately turn on and transmits pressure at 12 MPH but he sensor on the spare takes more time since it doesn't spin. You get a reading from the spare tire sensor often enough though that you can be sure of what pressure is in the tire. Maybe once every 10 miles or so it will get enough bumps to wake it from sleep. To add a sensor for the spare tire press the plus button until it goes into the register sensor mode; then push the plus or minus button to cycle through the different wheel positions until the spare tire icon on the head unit display flashes; then screw the spare sensor onto the spare tire and its ID number will show on the display when the air pressure in the tire turns it on. Then push and hold the middle set button to finish the registration process. That instruction is left out of the manual. The other thing to note with these sensors is it is not at all necessary to use the locknut with the sensors. Just put 'em on without the locknut and snug 'em up. They won't leak or come loose. It's a real pain messing with the locknuts and if you use the locknut on a valve stem of a wheel that has an OEM internal TPMS sensor it will corrode and get stuck. Those TPMS valve stems are aluminum and the brass nut will corrode to them fast from dissimilar metal corrosion. The aluminum threads will get stripped trying to get the locknut loose and ruin the internal TPMS sensor. Ask me how I know that. Even if your car, like my 2013 Prius, has a TPMS from the factory, it will only tell you at least one of your tires is 25 PSI or less. It won't tell you anything more than that, which really isn't very much information. It's a lot better being able to see exactly what is in every tire; including the spare. These things are so accurate; if you're driving a long distance on a sunny day you can tell if you're driving east or west just my looking at the TPMS display. The 2 tires in the sunlight will be a few degrees warmer than the 2 tires in the shade! The only downside (at least with my older 2 units) is the solar panel doesn't put out enough power to keep the battery charged indefinitely. I still have to plug in the USB about once a month to charge the battery to full. Maybe the Tymate won't need that.

I've been looking at TPMS sensors and displays for some time but can't afford most of what I've found or been recommended. While not the least expensive this Tymate unit had mostly good reviews at a price I could afford. My first use was on a recent trip to central Washington in the early July heat and the product performed flawlessly and certainly met my expectations. Set up was easy and the included "Anti-slip Mat" to hold the display on the dash worked very well. It does take a few minutes for the monitor to reconnect with the sensors after having been turned off. The displayed data appears to be accurate, and it provided me a level of comfort I was looking for. I did notice that the tires on the sunny side of the travel trailer ran hotter than the shaded side so that is something to bear in mind. As a note the ambient temperatures on our trip ranged between 75° and 95°. The tire pressures elevated by about 10 psi and the temps ran about 90° - 100°. The lack of a backlight for the display is my only complaint but it fit my budget and met or exceeded my other expectations. I highly recommend this product.

Lo sto usando sul camper e funziona molto bene

This product helped me avoid getting stranded on my long drive as the real time display allowed me to notice a serious air leak in my rear left tire.. I immediately searched for the nearest Garage and got my tire fixed. -- A real life saver.. Very useful and practical product. -- Prashanth

This is a must have, if your vehicle doesn't have TPMS. This is an excellent product, works well, very easy to install.

Good quality TPMS compared to others on the market and appears to be accurate and when you remove a sensor from the valve the alarm does work which I have found on others it doesn’t always work. I did wonder about the screen background being white with black detail but works better than others I’ve used being the opposite way around because other screens in daylight are harder to see especially if you drive a convertible car.

Passt,alles gut.