i found this, i was looking for something to use with my DIY LPM from knimrods boards but never bought a sensor head
http://images.google.com/imgres?img...meter+sensor&start=40&ndsp=20&um=1&hl=en&sa=N
http://images.google.com/imgres?img...meter+sensor&start=40&ndsp=20&um=1&hl=en&sa=N