B-Qtech Tire Pressure Monitoring System Solar TPMS with Repeater for RV Trailer, 3.3inch Large Screen, 6 External Sensors(0-199Psi) Brightness Adjustable 7 Alert Modes Real Time Display Press Temp

This is a fairly innovative design that in practice has a few weaknesses. First the good - no running wires! The sensors communicate wirelessly to the monitor, and the monitor itself is solar-powered, so you don't have to run power to it. You do have to run the antenna to a spot where it can receive signals form the sensors, probably at the back of your vehicle. It does a good job of updating constantly and alerting you to low pressure or high-temperatures. The instructions are quite clear, albeit fairly involved, and do a good job of covering installation and usage. Amusingly, they spell 'Tire' as 'Tyre', so NOT a US company!On the down side, I can see the solar power being a problem if you drive a dark vehicle. Normally the monitor would be installed facing slightly up so it can be easily read. Unfortunately, the solar panel is on the back side of the monitor, so it must be installed on the dash where it can get sunlight. If you have a lighter colored vehicle, the indirect sunlight bouncing off of your hood will probably suffice, but a darker vehicle may provide insufficient indirect light, so you will need to install the monitor facing straight back so the solar panel can see the direct sun,

This is perfect for my overland setup. Not only can I monitor the tire pressure of all four on my rig, I can now also keep an eye on my trailer tires. I have on board TPMS but all it tells you is if you're in trouble, never defines the actual pressure. These can tell me how many pounds I'm at to let me know if a problem is developing, and again the cool part is now I can keep an eye on my trailer tires which were always just a mystery.Cannot wait to install!