Features:
1. Solution pH measurement
2. Solution temperature measurement
3. Sensor voltage measurement
4. Solution temperature compensation
5. Automatic/manual data recording with report generation
6. Data storage, viewing, and deletion
7. Adjustable sampling interval
8. Adjustable automatic shutdown time
9. Self-calibration, selectable 4.00-6.86-9.18 or 4.00-7.00-10.00
10. Temperature unit selection
11. Factory reset
12. Adjustable screen brightness
13. Chinese/English language selection
14. Low battery warning and battery level indicator
15. USB charging
16. Data transfer via PC software connection
17. Generates CSV and BMP files compatible with Windows systems; can also be used as a small-capacity storage device (USB flash drive) to store other file formats.

Parameters:
1. pH Measurement Range: 0.00~14.00
2. pH Resolution: 0.01
3. pH Measurement Error: +/-0.05
4. Temperature Measurement Range: 0~60 degrees Celsius (32~140 degrees Fahrenheit) Temperature Resolution: 0.1 degrees Celsius, Error: +/-1.0 degrees Celsius
5. Voltage Measurement Range: -500~500mV
6. Voltage Resolution: 1mV, Error: +/-3%
7. Solution Temperature Compensation Range: 0~60 degrees Celsius (32~140 degrees Fahrenheit)
8. Operating Environment: 0~50 degrees Celsius (32~122 degrees Fahrenheit)
9. RH less than 85% Storage Space: 8MB (can store approximately 397,000 data entries)
10. Battery: 3.7V 1000mAh Lithium Battery
11. Low battery warning: 4-level battery indicator; automatic shutdown when voltage drops below 3.3V.
12. Charging adapter: 5V/2A
13. Dimensions: 160x65.35x35mm