Just plain/regular metal ones...not the airless/airlock ones, correct?
We're going to test our system later today and see how long it takes the sensor readings to actually drop from the monitor and how long we get false "last readings".
Makes me a little nervous to think that all those times we did get warning beeps from the monitor, we had actually not been getting sensor readings for 45 minutes to an hour.
And it sure makes me think the vendor at the Tampa RV show (see post above) was blaming me for "user error" when it was just the TST system working as it works.
Again, I'm sorry that you had a blow out. But I'm glad you brought this situation to light. I used to be one of the people screaming loudest to get a TPMS and thinking everyone should have one. I do admit to feeling a little duped.