You prolly have this info now (via the DNA40 pdf), but just in case you don't...
By default, the Temperature Protection setting is 450° Fahrenheit
To change the limit
1) Lock the device by pressing the Fire button five times.
2) Hold down the UP and DOWN adjust buttons for two seconds.
3) After two seconds, the maximum temperature will be displayed, and the UP and DOWN buttons should be released.
4) Use the UP and DOWN buttons to adjust the maximum temperature
5) When the display shows the desired maximum temperature, press the Fire button to exit temperature adjust mode.
If you want the Temp Protection set to OFF, just continue pressing the UP button until it reaches the maximum setting. Then it will revert to OFF.
You may NOT have accidentally turned it on! I found with the Clownsticks that that precise issue was a minor annoyance. The message appeared randomly (from what I could tell). And, it didn't seem to matter which button I hit to make it go away. The authies don't do that.
Hi Marc, and glad to see you just the same!
Do you have the link and the time that the Plumers were yet again talking about the infamous tosser stick? (By the way, I posted a pic of mine in another thread, and someone on the thread called it a tosser!)
(you know who you are, girlfren)

[emoji38]