1. Switching between ℃/℉ units: On the temperature interface, long press [M] for 2 seconds to switch the temperature unit to ℃/℉. 2. Data locking/retention function: When measuring, press [HOLD] once to lock the current reading, and the screen will display the [HOLD] symbol; Press [HOLD] again. Return to normal measurement mode. 3. Viewing historical temperature values: 1. On the current temperature display interface, short press the [M] key to view the maximum/mini-mum temperature values, and switch the display sequence from maximum temperature (MAX) to mini-mum temperature (MIN) → current temperature. 2. Every time the temperature is detected, the display of maximum and mini-mum values will be refreshed. 3. On the MAX/MIN interface, if there is no button operation, it will automatically return to the current temperature display interface after about 5 seconds. 4. Temperature gauge alarm function:
1. Alarm temperature setting
① On the temperature interface, short press the [Power] button to enter the alarm temperature setting, which defaults to 300 ° C and flashes. Short press the [M] button to increase the temperature by 0.1 ° C, and long press the [M] button to increase the step speed by 1.0 ° C; Short press the [HOLD] key to decrease the adjustment by 0.1 ° C, long press the [HOLD] key to decrease the step speed adjustment by 1.0 ° C. Short press the [power button] key to save and exit the settings. After 10 seconds of inactivity, the settings will automatically exit. (Note: Pressing the [M] key and [HOLD] key simultaneously for more than 2 seconds can quickly set the temperature value to 100 ° C)
② Temperature setting range:- 50-300 ° C/-58~572 ℉.
