Posted here, by ToyKeeper, about thermal configuration mode: TK's Emisar D4 review !
10+ fast clicks then press and hold: Thermal config mode, added in v2. Hold the button until it gets to the action you want:
Blinks out current temperature limit. Release button to exit with no changes, or keep holding to continue.
“Buzzes” for 2 seconds. Release button to set temperature limit to maximum, or keep holding to continue.
Light goes to turbo. Hold button until the light feels hot enough, then let go to set a new temperature limit.
When you feel you have reached the temperature you can hold, you release the button, the it will blink N+N time, in my case 5+2, indicating 52º. If you go up or down it will be the same way. Hope it helps :+1: