Characteristic:
1. 3 LED
2. Manual temperature compensation
3. Easy to carry. D.C. power supply
Specifications:
1. Measurement range        pH (0.00-14.00) pH 
MV:(-1400 -1400) mV
2. Resolution:                 pH: 0.01pH 
MV: 1mV
3. Accuracy                 pH: ± 0.03pH
MV: ±0.2%
4.  The temperature of the measured solution: 0-60℃