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Old 03-16-2012, 01:10 AM   #1
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TST Internal Sensors

I see that TST now has internal sensors with their own brass valve stems available that are compatible with the 507 monitor. They are $79 each with a 7 year battery life span.

If they work as advertised the temperature feature will now be a very valuable reading.

More info at the bottom of the page tst systems
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Old 03-16-2012, 12:44 PM   #2
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I'm a few years from buying tires, but I would for sure make the switch, and then try to ebay my external sensors
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Old 03-17-2012, 11:09 PM   #3
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Note that the batteries in the internal sensors cannot be user replaced. The sensors have to be returned to the factory for replacement.

Also the website is vague about the price of the sensors. The illustration shows a pair of sensors but the pricing is $79 each. Is that $79 for each pair as shown or $158 for the pair?

These are advertised for RVs but, with that long stem, they would be practical for only class As and some class Cs. I like the idea of internal sensors but not being able to change out the batteries without shipping the sensor back to the factory and that long stem would make them impractical for me.
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Old 03-19-2012, 03:33 PM   #4
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Note that the batteries in the internal sensors cannot be user replaced. The sensors have to be returned to the factory for replacement.

Also the website is vague about the price of the sensors. The illustration shows a pair of sensors but the pricing is $79 each. Is that $79 for each pair as shown or $158 for the pair?

These are advertised for RVs but, with that long stem, they would be practical for only class As and some class Cs. I like the idea of internal sensors but not being able to change out the batteries without shipping the sensor back to the factory and that long stem would make them impractical for me.
Hello All,

To clarify, the TST internal sensors are sold for $79 each, or $158 per pair.

They are very similar to the internal sensors available on passenger cars, vans, and light trucks.

They mount inside the tire, and with varied available valve stem lengths, they will work with any class A or class C motor home.

They will also work on any travel trailer, fifth wheel, or the like.

Since they are a new product for us, we are trying to encourage interested parties to call first so that we are certain that we are selling an item that will satisfy the needs of the customer with no confusion.

We are also adding some text, and bringing more specific, technical data to the web page regarding these sensors. They do work with our 507 monitor, and the sensors program in the same way as our existing external 507 sensors program.

They function and report tire data in fundamentally the same manner as our external sensors, and are supported by the same service that has brought us to the forefront of TPMS.

Thank you for your interest in our new sensors.

Travel in safety!

Dan Covington
President
Truck System Technologies, Inc
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Old 03-19-2012, 03:44 PM   #5
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Thanks for the update, Dan. I do have a question. Have you given any thought as to how to handle the replacement issue. If some one were to install the internal sensors now when they were having new tires put on, of course there would be no problem. But what happens in say six years when it's time for another set of tires. It really wouldn't be practical to dismount all of the tires, send the internal sensors to you for battery replacement, and then wait for the replacement sensors to be shipped back, since all of that would take at least a week. Thanks, Bob
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Old 03-19-2012, 07:40 PM   #6
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Thanks for the update, Dan. I do have a question. Have you given any thought as to how to handle the replacement issue. If some one were to install the internal sensors now when they were having new tires put on, of course there would be no problem. But what happens in say six years when it's time for another set of tires. It really wouldn't be practical to dismount all of the tires, send the internal sensors to you for battery replacement, and then wait for the replacement sensors to be shipped back, since all of that would take at least a week. Thanks, Bob

Thanks for the clarification, Dan. I fully agree with Bob about battery replacement for the same reasons.

I like the idea of internal sensors (protected from theft and weather plus temperature readings will be more accurate) but you may want to reconsider the valve stem length. As they are now, they are suitable only for Class As and some Class Cs. They protrude far too much for any single wheel, such as on fifth wheels, travel trailers, and trailer type toy haulers (despite your claim otherwise). They would also be unsuitable for single rear wheeled tow vehicles (replacing factory sensors in a tow vehicle would be desireable since the factory systems do not provide near the information your system will). Besides being unsightly because of the length and the unplated brass, the extra length is just begging to get knocked off.

Your external sensors are still at the top of my list for when I get my TT for both the trailer and the tow vehicle but, until you make the batteries replaceable and offer a version with shorter, preferably plated, valve stems, your internal sensors are of no interest to me.
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