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I run the TST model 507 (with replaceable batteries). It gives me pressure and temperature. Saved my b..t yesterday when the rear tire on right side trailer went low. Appears my valve stem seal went bad. Tire was at 118 in morning before I left, went up to 133 during day and then in about 20 minutes dropped to 80 and temp went up from 26 C to 35C. Stopped, air up tire went into town and got a new valve - all good today.
I'll never run a rig without a temp and pressure monitor again. Lots of them out there but TST is as good as they get.
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John & Bonnie McClun
2008 F-450 33K "BAT" Big Azz Truck
2011 MS 36TKSB3
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