I have a Tire Minder (TM 77) for my coach, tow dolly and toad. In my opinion, they provide outstanding support. Earlier this summer I had a sensor fault on a dolly sensor. I called them and they sent a replacement sensor, spare batteries, to the address of my next stop, free of charge. Swapped it out and sent the old one back postage prepaid. Just my 2 cents worth.
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