[Shane826]

Bill- Wow it went up in price. I didn’t even look at the current price; found it in my Amazon history and copied the link. I think I paid about $50 less than that. And the cheap Android phone was all of $25 off Craigslist.

I agree if you can find a system with internal mounted sensors that might be better for monitoring temperature. BUT if they are like a car TPMS, they will screw onto the back of the valve stem, which might mean steel valve stems won’t work.