Features: 4-in-1 pH tester, which can measure PH, ORP, H2, and Temp value with high precision at the same for time. It has a high-sensitivity glass probe, the full measurement range of the pH meter is 0-14ph. Compared with other pH meters for water, there is only a range of 0°C-50°C. our digital pH meter has a better range of 0°C-60°C (32°F-140°F). for Ideal for household and laboratory pH testing applications, including drinking water, swimming pool, pond, aquariums, etc. Small size, portable, you can carry it with you wherever you go. Specifications: Material: Plastic Size: approx 178x26mm/7x1in Type: backlight/non Power supply: 3x1.5V button battery Package Includes: 1x Digital pH Meter note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.