Features: 4-in-1 pH tester, which can measure PH, ORP, H2, and Temp value with high precision at the same 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 0C-50C. our digital pH meter has a better range of 0C-60C (32F-140F). 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. Package Includes: 1x Digital pH Meter Specifications: Material: Plastic Size: approx 178x26mm/7x1in Type: backlight/non Power supply: 3x1.5V button battery 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.