Hi, in the product description of the Extech EX330 you write:
... and on top of that, its been our daily-use multimeter for over 3 years. It's compact, has auto-off, tons of features and a temperature probe for checking thermal properties, soldering iron calibration and perhaps even a DIY reflow control.
Pls let me know which probe you are using with the ex 330. The delivered probe is good for temperatures up to 482 Fahrenheit only.