TST-507. I have sensors for the truck and trailer. 29' travel trailer, and it reads the sensors fine without the included relay. I like that I can easily turn of the trailer when not towing and still monitor the truck tires.
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Another TST user here. Have the non flow through and added four more for monitoring the Toad while traveling.
Have had zero issues other than using the most conservative % when first setting up for high alarm. Tires got warm one day traveling and hit the alarm - definitely got our attention.
On our third season and the only thing I’ve done to them is replace the batteries and the o-rings over the winter.
One more vote for TST here. We purchased a 507 set of four tire monitors this spring for the travel trailer and plan to add four more for our boat trailer in the future. Our decision was based on the positive reviews of the TST system that I read on this forum, the fact that the system allows us to monitor more than one trailer and we can easily replace the relatively inexpensive batteries ourselves. We used it for the first time on a recent 4,000+ mile trip to the Florida Keys and were quite pleased.
I have the 507 flow through and the non flow through. I use them on two boats and my RV. Can remove and put on any trailer I'm towing. I've had to change batteries and o-rings on older flow through set. Won't leave home without them.
Linear Mode
