very good and a good safety device on my fifth wheeler caravan.
only done one trip with unit in place but appears to to be working as advised.It does appear to over read by a couple of pounds (psi) as apposed to my tyre gauge otherwise very good.
I am a return buyer because I am totally satisfied with previous purchases.
I have used this product on another vehicle which I am now selling and it has been extremely reliable and accurate in its data readout. I have recommended this product to many people who are also full of praise for it's quality and ease of set up.
Needs to be assembled using the optional signal booster. Without the signal booster it cuts out for at least 20 minutes at a time, leaving no TPM operating when it may be needed. unreliable without the signal booster.