This low cost Digital Thermometer with a thermocouple wire probe is a simple and effective way to monitor temperatures in a roaster Especially when snaking a flexible wire into the roast chamber, it is easier than drilling holes for a rigid thermometer shaft.

And the temperature range on this thing is amazing: -58 f to +1382 f ! It comes ready to go with a K-type thermocouple and a 9v battery installed.

You have a choice of Centigrade of Fahrenheit readout on the big easy-to-see LED screen, and a Hold button in case you want to freeze the readout screen at a particular moment (not sure why you would want to.

With an pen, paper and a watch, you can create roast curve charts and graphs the old fashioned way! You can replace the thermocouple with any K-type probe, available at any electronics store. The thermometer is made in China and imported by Circuit Specialties. It also comes with a nice zippered canvas carrying case.

NOTE: the wire is rated up to 480degrees, plenty of room to watch coffee go from 1st to 2nd to ... too much.

It is possible to get the wire to fail or melt so be careful what it comes in contact with. Make sure just the end of the wire is touching the bean mass to get a proper reading and to insure long life of the thermoprobe