I have had tyre pressure monitoring systems for a while now and bought this one a bit over a month ago to monitor the caravan tyres as well as the tow vehicle. I am pleasantly surprised and impressed by the accuracy of the read outs. Highly recommend this product

These are not bad but give a +/- of 2psi at 40psi so this provides a good indication of tyre pressures. The solar charger for the screen is good but the screen is fairly dim even with the design to protect from sun. When deflating tyres for gravel or sand you need to manually adjust the low pressure setting as there is no deflate mode. The range for the caravan tyre sensors is very good, had the unit on charge in the house on initial use and was 15 metres from caravan and picked up tyre pressure. Had an issue with the first set not reading caravan tyres but they were replaced with no issues and the replacement set have worked fine.

Have only just finished the easy to install installation, took it for a test drive to check out the operation of the unit. found only issue with the rear right sensor, the reading flashes between 00 and 41PSI. it maybe a seal issue. It certainly does what it states it can do but time will be the test for reliability.