Let me post UNI-T’s reply below.
Hi Sir,
Our product has two measuring gears (high-gain gear: -15~150℃; Low gain range 150~550℃).
When you measure the temperature of the soldering iron at 360℃, try to set it to the low gain range to see if it can return to normal.
Here are the operation instructions.
thanks man i thought my new tool was damaged
I feel you, my friend. Glad you could clear up the doubts.