EEZTire TPMS4B Real-Time 24/7 Tire Pressure Monitoring System - Color Display, 4 External Sensors & Signal Booster - Perfect for Trucks, SUVs & RVs

I see wildly different reviews on this product. Some give 1 start and others give 5. I have used the system since April 2018 on my GMC 350 and have zero issues. I thought I would comment on some of the reviews that I have seen. I believe I may know what is causing their issues.One guy shows a pic of a blown out tire and the system reading pressure in it. That is not likely. The system alarms in seconds if a sensor is removed (ie zero air pressure). It is easy as pie to test. Unscrew a sensor and you will get beeps immediately with a flashing tire showing what one it thinks is flat. Chance are his sensors were mixed up. One of them is probably reading zero. Just not the one he thought was on that tire. I suspect that at some point the sensors were mixed up and installed on different tires. The screw on type sensor have to be removed every time air is added. It is very easy to mix them up. They tell people to label them, but most probably don't or the labels fell off because they didn't cover them with clear fingernail polish like the manual suggests.I think a lot of issues are related to not knowing how to or not being efficient at programming the system. Programming is very easy if you follow the directions. There are a number of people that have great videos that walk step by step through it. I think the key is to program the sensors on your kitchen table first. Then take them out to the vehicle. It is easier than crawling around and trying to get to every tire and code it before the system times out. If the system times out the work is not saved and you have to start over again. I think that is the root of the problem for people complaining about having to keep programing the sensors over and over again.The next common issue I am seeing are people complaining about sensors dropping out while driving. RF interference will cause problems. If you have wireless cameras, refrigerators running, and other stuff that can generate RF interference around your vehicle it could cause problems. The way to solve that is by using a repeater. The repeater needs to be closer to the receiver than to the tires. Don't put a repeater in the very back of a 5th wheel and then expect it to transmit all the way to the tow vehicle. They recommend that the repeater should be installed in the front bay of the 5th wheel that is closest to the truck. Not in the back or middle. Metal can cause problems for it as well. The transmitter needs to be in a place that has the least amount of metal between it and the tires/receiver.I've seen people complain about the pressure readings. The EEZ RV guys have a video that talks about the valve stem and that the sensor needs to be able to push it in so air comes out that the sensor can read. In some cases those pushpins are in too deep and when screwing the sensor on it does not push them in at all or far enough to let sufficient air out to read. My bet is this is the problem for the ones complaint about that. This makes them think the batteries are not working and get frustrated when battery changes don't fix the problem. All it takes is a valve stem tool. Unscrew it slightly or replace it with another one. An easy test would be to screw the sensor you think is having problems on a bike or something else to test with. If it is getting a reading from another valve stem then chances are this is the issue.The only thing that I do not like is having to unscrew the low profile sensor every time I need to add air in the dual tires. They are very difficult to reach and unscrew. I can't put them in fast enough to minimize air loss either. The trick to get a good reading is to over fill the tire and reinstall the sensor. Let the system get a good reading, which will be high. Then slightly unscrew the sensor to let some air leak out. Screw it back on and get a good reading again. Going from high to low will let you get an perfect cold pressure setting. Most people fill to the exact cold pressure sitting and then when they screw the sensors on the tire pressure drops below the optimal reading. I am a bit tired of doing this though. I just ordered flow through sensors for my dual wheels. I believe it will be easier to put air in them. The front tires or ones with the valve stems facing out are easy.Speaking of tire pressure readings, gauges are different. Temperature makes a big difference in getting an actual reading. Most air gauges do not have temperature calibration. This is why the EEZ sensors may read different than a tire gauge. One guy mentioned that he had a calibrated racing sensor, but that doesn't mean it is temperature compensated. I have a Steelman 9797 (https://www.amazon.com/gp/product/B004IQ9I6O/ref=oh_aui_search_asin_title?ie=UTF8&psc=1) gage that is temp and pressure calibrated. It matches the EEZ readings exactly. The thing was $140. The only way to perfectly test the reading between the EEZ and a tire gauge is to use a properly calibrated gauge that takes into account ambient pressure and temperature.Another thing to note that I am not in love with his the anti-theft cover. Lots talk about this on here. I agree with them. I took them off. I could have left them on the front tires, but I don't think this is really that hot of an item to steal. If one ever gets snagged I may rethink this, but so far I haven't heard of anyone actually having their tire sensor stolen. They only work with the system they were purchased for. Every manufacturer has a different frequency and encryption.I have had zero issues with it on my GMC 350. I have driven it over 14,000 miles so far with the same batteries and sensors. The thing to keep in mind is that this system isn't just plug and play. It works perfectly if you take time and plan out the install. The main tip is to program it inside the house with every sensor on a table. Test it and get comfortable with how it works before installing the sensors on a vehicle. Problems are harder to troubleshoot after the system is installed.