Characteristic:1. 3 LED2. Manual temperature compensation3. Easy to carry. D.C. power supplySpecifications:1. Measurement range pH (0.00-14.00) pHMV:(-1400 -1400) mV2. Resolution: pH: 0.01pHMV: 1mV3. Accuracy pH: ± 0.03pHMV: ±0.2%4. The temperature of the measured solution: 0-60℃