Originally Posted by ralfrcgroups
So please give us a link, I would like to buy one....
I may have used incorrect term, they are infrared digital detectors and you can get them from Lowes, Home Depot and on line. They are very accurate I keep a small one on my key chain it was $30 at an HVAC supplier, Grangers probably a good source also. You point the laser dot at where you want to monitor and it displays temp on digital display. I troubleshoot digital electronics with them down to SMD size parts.