I googled a few places, called a few places and found a good value for money system http://www.ppacaraudio.com.au/index.php?route=product/product&path=119&product_id=488 spoke to ppa car audio on the phone, came past and picked it up.. installation was simple the item screwed on to each valve and the device was automatically programmed. i will now know what each tire pressure is on each wheel and i will know if i get a tire pressure drop also i will get a audible alarm if the wheel gets too hot I am glad I have the TPMS, it provides an extra level of safety to me.