I got this temperature monitor from a friend which has high and lo presets w/ 12V out and I accidentally snapped the external thermometer and I can't find a suitable replacement.

I have tried google'ing all the markings on the PCB it but i can't find any documentation for it.

My best guess is this company made it : http://www.hotfrog.com.au/Companies/Circuit-Level-Electronics but that number doesn't exist

I'm not sure whether to use a thermistor or a thermocouple! I'm only beginner level with electronics so go easy

Thanks!

 

What temperature range was covered?; if around 0-100C prob. a thermistor. If you still have the broken parts, measure resistance of both halvs and replace with a whole one or glue parts together with conductive cement.

 

Do you have a pic of the thermometer that snapped??

 

Unfortunately not it sort of looked like this (just the metal tip and white barrel) :
http://www.allproducts.com/manufacture97/dyvision/product1.jpg

Im not sure of the range but if it matters I only care about 5 *C - 40*C

I am going to use this circuit to drive an airconditioner using a relay