Jansite TPMS Tire Pressure Monitoring System
The Tire Pressure Data, The Tire Pressure Readings, Tire Pressure Monitoring System, Waterproof External Sensors, , The Tire Pressure Monitor System Colored Screen Universal Wireless Lcd Display, 20 Seconds, The Tire Pressure Monitoring System, The Most Accurate And Reliable Readings, The Most Accurate Readings
Results of our analysis:
We analyzed 6,175 reviews for 24 products in the Aftermarket Tire Pressure Monitoring Systems (TPMS) category.
We then analyzed 91 reviews for this product. Of these, 57 reviews were recent.
100% of reviews were positive.
Final Score:

7.64 out of 10, based on these factors:
Common Questions
I was thinking about putting these on a trailer and I don't know what the range is.
It's not so much the distance that would preclude these being used on a trailer, it's the upper level of pressure that the monitor can deal with.
I don't know which one is front or back, I only see the main unit.
I bought mine two years ago, but I'm pretty sure the box they came in labeled them RF, LF, LR, and RR. So long as you install the units on the corresponding wheel, they'll be fine.
How do you charge this item? Does the charging cable go into the cigarette lighter?
The main unit needs to be charged before use.
I'm not sure how to remove the whole sensor with the cap because the battery is showing.
Have to use a wrench with the kit to loosen the nut on the valve stem.
I don't have a manual, can someone post or share it?
The manual is a clear, legible, JPG Scan of all the pages in English, so it should show up after it goes through the Amazon review.