snowwolf said:I have looked on the net but as yet not found one, if anyone does see a suitable temperature reader with an alarm, either wired or wireless please let me know.
Greddy makes a nice one. Kinda spendy but worth it for the peace of mind.

It has the provision for triggering any type of external audible alarm. It has a built-in flashing red LED. The alarm temp can be set to whatever you want. It has a resetable memory so you can display your peak temp.
It is not wireless and the version pictured reads degrees-Celcius. It is a quality unit. See turbocruiser's install for an easy way to hook it to your engine. A couple of us have tapped the water neck and permanently mounted the probe.
-B-