I just installed the tst507 right before the trip we are currently on. It worked great.
Truck tires all aired to 70 psi (monitor said 68) while driving for a while it read around 72-74 psi at 80 degrees
Camper tires aired up to 110psi (monitor said 108) while driving for a while it read 120-122 psi at 95 degrees
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