There is a little bit of strange information regarding TPMS response times in this post so here is what I found on the system I currently have.
At the risk of being branded a sales person for Doran...
Taken from the Doran Website . . .
A Doran 360™ series tire pressure monitoring system is a compact system that delivers powerful results and protection. The Sensors are continually reading pressure and sending signals to the monitor about the air pressure in each tire around the clock. Each tire pressure monitoring system from the Doran tire pressure monitor product line consists of two basic components. . .
Key word being continually . . .
I cannot speak to what others have posted but here is a link if anyone is interested.
http://www.doranmfg.com/tirepressuremonitorproducts.htm I test the system by removing the sensors and the monitor alarms instantly.
and if someone can build me a cage to protect that plumbing I'll buy it too!
Happy Camping!