TPMS at cheap price and advice

[Millerd1]

Found 2004 Yukon OEM TPMS for $110. here https://www.screencast.com/t/1XsvhUqmryAO

Now do these TPMS send tire pressure to computer or just pressure trip events? If the pressure is measured and reported is there smart phone App that can read the tire pressures?

 

[HiHoeSilver]

Found 2004 Yukon OEM TPMS for $110. here https://www.screencast.com/t/1XsvhUqmryAO

Now do these TPMS send tire pressure to computer or just pressure trip events? If the pressure is measured and reported is there smart phone App that can read the tire pressures?

They report to the truck via RF. I don't know of an app to read them.