"Instructions" is poorly written, but there is plenty to experiment with. Once you get it right, it's easy, but the consumer doesn't have to go through 45 minutes of trial and error to figure out how to use the product. Also, I have no idea if the monitor is working or what the display should look like when it is working. For example, how are we supposed to know if all the sensors are working properly? As far as I could see there is no error on the screen indicating all sensors are being received. How do I know that one (or more) is not broadcasting? I have uploaded a picture of what my sensor looks like after installing all 6 sensors and configuring the system according to the instructions. But as I said, I don't know if it's supposed to look like that or if the sensors just don't transmit PSI. Judging by the pictures in the ad, I figured that next to each tire is a PSI gauge that shows the current pressure. But as you can see, mine says nothing. I'm hoping someone will post help, tell me what the monitor should look like, and how to tell if each of the sensors is transmitting or not. I will pack everything up and send it back. I'm not interested in putting my life in the hands of a system I don't trust. EDIT: I spent a few more hours playing around with this system today and it finally worked. None of the transmitters worked until I drove the MZ and then all 6 suddenly came alive. Nothing in the instructions (or what the manufacturer calls instructions) said anything about having to drive a bus to make them work. And maybe a good stab with the end of a screwdriver would have worked too, I don't know. But anyway, now it works and seems pretty accurate. I'm changing my rating from 1 to 4, which I think is generous considering the frustration you endure with instructions. Seriously, isn't there at least ONE person in Mainland China who can write instructions? in the English dialog box? Edit (27 Aug 2019) As an update to my previous posts. There are many factors to consider when purchasing a TPMS and many of us don't know what it is until I've bought one and had a chance to check it out. In my case, TPMS came with mostly self-explanatory instructions, so installation was difficult. I didn't buy "Flow" chopsticks because I heard too many people say they don't work. I still don't know if they will work or not, but I do know for sure that the kit I bought requires removing the cover (transmitter) to add/remove air. Easy enough right? Well, not actually in my RV. The caps are secured with a lock nut and must be loosened with a small tool (supplied). So you loosen the nut, screw it all the way down, remove the cap, and then add air. In my case I had to remove the locking nut completely to get the clearance needed for the air tool to snap in securely enough to add air. But let's not forget that this assumes that you have already modified or completely removed the tire trim ring. Suddenly checking the tire pressure becomes a real agony. Especially on the rear tires, as the decorative ring is attached with two large 1 ΒΌ nuts. You have something like this in your tool box, don't you? Also, and this is very important if you have TPMS you should be able to just look at the monitor and see what pressure each tire is at and then add/remove air as needed. Well, that's a reasonable guess, and I made one too. But in my case the monitor shows the tire pressure last measured when the tires were rolling, not the current tire pressure. I have tire pressure "before" the descent, and not after I'm already on the road. Especially if I have to follow all the above steps to add/remove air. Another thing to consider is how the tire information is displayed. In my case, the kit included a small solar powered display. I'm a bit of a solar freak so this was a real selling point for me. But the optimal word here is "small," meaning you can't see the display when it's sitting on the dash, where it needs to be to suck up those battery-charging protons. Here are some of the things I've done. "I don't know when I bought mine and if that isn't reason enough to start looking for a better unit, this junk turned this weekend into a fiasco. to the jeep invasion at Pigeon Forge. We came back 3 hours later and found the driver's side front tire flat. Long story short, and after a $165 service call to fix the tire, the technician found the tire monitor was broken and the tire was bleeding air. We removed it, filled the tire and everything is fine now. So this product was a HUGE disappointment. What we bought as a precaution failed in every way, even causing a flat tire. I removed the other 5 monitors and will find a better system to replace them. I seriously don't understand the high ratings this product has received. Maybe the only ones I have are anomalies, I don't know. But if anyone doubts the honesty of this review, please send me your address and shipping cost, I will send you this product turkey so you can test it yourself.