YOKARO Tire Pressure Monitoring System, Hard-Wire TPMS with Adjustable Angle Monitor - 4 External Sensors

This item saved my bacon on the first trip! I was headed back from the coast and the left rear tire on my boat trailer got punctured. The monitor immediately alarmed and the readout for that tire began flashing. I could see the pressure falling fast on the readout. I felt no issue from the tire in the cab of the truck and couldn't even see a problem looking in my side mirror. A rest area exit came along before I would have noticed anything wrong without the monitor. I was able to get off the interstate and change the tire there in the parking lot instead of the side of the interstate with cars and trucks coming by my at 70+MPH. Got my money's worth on the first trip!

We got lucky I guess and got a good set of the bunch according to some of the bad reviews. All 4 worked great on our Toyota Tundra! The wheels came with internal sensors that the batteries have died in and me not wanting to pay for OEM replacements, I bought this set! Yes we have the dash light that shows the small flat tire, but you learn to disregard it fast as now we have real-time data of pressure and temp (albeit not internal tire temp, just close) You know the ones on the front by the engine heat and disc heat, they are always ten degrees hotter than the rear. Each screw on valve cap sensor sends telemetry about every 5 minutes to save the battery life, but will instantly send a signal if a sudden loss of air happens. Display is nice and bright and dim adjustable. Also can switch it to say lbs & F or bar and C.

So far it’s installed and seems to be working well. The tire sensors all went on in about 10 mins and the receiver / display picked them up right away. I tested as they were going on and the pressures are consistent with what my manual gauge was reading.For mounting - I chose to flush mount the display onto my dash with velcro. There is a ball socket on the back that required a small Philips-head to remove and from there I just put some Velcro on the dash and some Velcro on then back of the unit, avoiding the 3 small buttons and the speaker.I also chose to hard-wire the unit to my in-cab fuse panel. The unit itself takes a 12V input so this was easy with an add-a-fuse adapter.

EDIT: I gave the product one star earlier because the product didn't work. I found out later with a multimeter that the batteries in the sensors were practically dead. I was upset that I had to buy new batteries from my local Walgreens to replace the old batteries, but Yokaro's Customer Support was very helpful in resolving my problem. If you plan to buy this product, make sure you buy some spare batteries just in case. I think in my case I was unlucky and received the TPMS with low batteries. Make sure you buy 1632 batteries from Amazon as the batteries from your local stores will cost you a few fingers.

Works great on my 1 ton pickup with higher load rated tires (60-80 psi). For my fellow HD pickup drivers out there, be weary of other add-on TPMS systems that can't read psi that high. Takes about 10-15 minutes for initial setup and trying to figure out the loosely translated directions for setting up min/max pressure alerts, temp alerts, psi vs bar, and Fahrenheit vs. Celsius. Lots of beeping while trying to connect to sensors for first time. Smooth sailing from there. All the information I need--packed on a small display. Happy so far.

Update: customer services responded very quickly by email and shipped a whole new kit at no cost. Range is very good working on my 29 foot RV trailer.This TPMS could turn out to be very good. Was however delivered with non-working adjustable adapter for the cigarette lighter. Customer service very responsive by email (only) and are sending a replacement. I am using this in an 29 foot dual axle camping travel trailer. There seems to be no signal indicator and the unit stores the last reading permanently even when it’s 100’s feet out of range. This could be dangerous because it would falsely say all is normal even when the unit in the truck has lost signal from the trailer. The only true way to tell is to remove each sensor in turn and check the pressure reading goes to zero. I would have expected a lost signal warning. If there is one then it’s not working.

I would like to give this unit more stars, it seems to be built better than other cheap TPMS systems I have seen, though has a few flaws, and a poorly written instruction sheet. Overall the range and signal seem to be good, though like other reviewers mine arrived with dead batteries in 3 or the 4 senders. Also the senders have rather shallow threads on the valve stem connection, they worked ok on 3 of my 4 wheels, though one wheel that was replaced after an accident has a valve stem that is not threaded all the way to the end (the threads stops 1 or 2 thread widths from the tip) and I had a lot of difficulty connecting the sender on this one wheel, I ended up using a short 1/2 inch metal valve extender I had laying around to get it to work.