TPMS Tire Pressure Monitoring System with USB socket in monitor, Cigarette Lighter Plug Universal Wireless Car Alarm System LCD Display with 4 External Sensors (Cigarette Lighter Power_External TPMS)

Overall, I believe this device works as advertised. Accuracy is within a PSI of my tire gauge… but I don't know which one is correct. But, it's close enough for me. And, it's not a bad solution for an older car without a TPMS. That said, there were a couple of disappointments with it. First of all, I noticed that my device was manufactured upside down. Not a big deal, but it means that the adjustment buttons are on the bottom of the device when I have the display right side up. Secondly, the menu instructions are confusing, which means that initial set up takes a little longer than it should. Also, I tried adjusting the brightness of the display as per the instructions, but nothing changed. I'd like a brighter display in the day time. And, lastly, I would have preferred a slightly larger display to make the numbers easier to read.UPDATE: One of the sensors had a strong appetite for batteries! The right rear sensor has gone through three batteries in just eight months. The other three sensors are still using their original batteries. The right rear sensor has now failed completely. I've contacted the vendor for help under the 1-year warranty, but have not received a response. I'm dropping my rating to one star as a result.UPDATE #2: It's now been well over a month since contacting the vendor asking for help with the failed right rear sensor. Still absolutely nothing from the vendor, and the product is still "covered" by the warranty. If you choose to purchase this item, know that you will have no options for a return after the Amazon return period. The vendor has no interest in honoring the warranty. I would recommend that you look to another product rather than purchasing this item.UPDATE #3: Two days after posting UPDATE #2, the vendor did contact me and has offered to send a replacement product. I will update this review after I receive my replacement.UPDATE #4: Vendor emailed me on 9/5/20 that a replacement was being shipped to me. I received it on 9/8/20. If there are any issues with the product after I install this replacement, I'll update this post (again). For now, I'm changing this from a one-star rating to three, since the vendor did replace the product under warranty.

I received this set and the unboxing was impressive. Attractive, and even came with an extra set of batteries. Installing the caps was a little challenging, as the receiver in the cap is shallow and it took a little doing to push it down enough to catch the threads, but I got the hang of it.I’m in a large van and I filled all of my tires to 60psi and hit the road. This was verified with both my pump, and an external pressure gauge. The receiver unit was measuring 4 different pressures, ranging from 53 to 46psi. I figured it would level out after a while.I drove for three hours and not one pressure updated. I even stopped after the first hour and removed one, thinking maybe they weren't communicating and it instantly alarmed with loss of pressure, so it was clearly talking to the receiver. Putting it back on, it registered the same 53psi it had to begin with.Maybe this is better suited for cars that have lower pressure tires. I don’t know.I emailed the seller with this info. They suggested I could return it and proactively issued a refund, so in that regard they did take care of me. I still have to figure out my TPMS situation though.

Purchased this for my daughters car for Christmas. Order was shipped fine, instructions were ok, box was for the dash mount not the plug in unit I received. Installed on vechicle and all worked well for just over a month. Now the passenger side front will not send signal. Reset unit multiple times but still will not work. Very disappointed. Will contact seller and see if they will help fix. Will repost after seller resolve.** update, seller helped with resolve. The battery went bad in the sensor. Replaced battery and now works fine.Only four stars.... battery shouldn’t have gone bad in a month, and I had to go and purchase battery in order to correct the situation.

Bought this TPMS for my trailer. Does the job of alerting me if there is a radical drop in tire pressure.Pros: Alerts when pressure drops Easy to install and useCons: Not accurate. Cold tire pressure starts off within 2 psi (at 65) and then when it warms up it showed one side was 6 psi than the other. When checked all were within 2 psi. Passed the leak check too.

This is a very excellent aftermarket TPMS for those car that don’t have one. It’s very easy to set up once you input your threshold for low and hi pressure that’s it. Also you must keep in mind that this actually giving you real time data. I see comments saying that they show different pressures values doesn’t mean is no good , because when you drive tire pressure builds up. You Park your car know you see each wheel @ different pressures , is because the pressures goes back down onto you drive again , it’s not a malfunction it’s given you real time data of pressure and temperatures of each tire. This is better than OEM TPMS ,because on those system youwill only get a light and you have to figure which tire is the light from and that’s useless.And on accuracy I would said is on point give or take a pound depends on which gauge you use to set your tire pressure.So bottom line it’s a very essential TPMS and in my opinion better than OEM tpms.

I received the items and installed the sensors correctly but three of them didn't work, i reinstalled them on another car and the same happened only one of the sensors worked and is sending readings , i replaced the batteries and still the same.One of four sensors is working and the rest are broken.Amazon customer care are no help they didn't accept to replace the broken sensor and only refund if i reship the broken product INTERNATIONALLY to them. Unfortunately the shipping cost is more than the product it self. So make sure if you want to gamble your money on this TPMS.