At the heart of the systems is a wireless inductively coupled system that delivers operational data from compact, high temperature data transceivers or tags mounted to the component being monitored. This is typically a piston head or valve, but can include other moving parts such as turbos.
Variations of the system have to date been successfully applied to monitoring piston head and valve head temperatures in high performance motorsport engines, but it is equally applicable to commercial and consumer diesel and petrol engines.