The main function:
1. Reset function: Press and hold the power button for 3 seconds in the power-on state, and then release it, when the screen displays "----", the reset is successful
2. Automatic temperature compensation function: 0-80 degrees Celsius
3. Power-off data storage function: the data will be automatically saved after the battery is pulled out, and the storage time is one month
4. Test paper function: the color of the backlight will change with the PH value, just like litmus test paper

Product specifications:
1. Material: PC + ABS flame retardant
2. Calibration method: 3-point automatic calibration
3. Resolution: 0.01PH
4. Batteries: 2 x LR44 button batteries (batteries are included in the delivery)
5. Range: -2-16PH (usually 0-14PH)
6. Temperature range: 0-80 degrees Celsius
7. Dimensions: 15.5 x 3.2 cm
8. Net weight: 58 grams