Features: 4-in-1 pH tester that can measure PH, ORP, H2, and high precision temperature value at the same time. This is a high-sensitivity glass probe, the full measuring range of the pH meter is 0-14ph. Compared with other pH meters for water, it is only in the range of 0 C-50 C. Our digital pH meter has a better range of 0 C-60 C (32 F-140 F). Ideal for home 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. Specification: Material: Plastic Size: About 178x2 6mm/7x1in Type: Backlight/No Power Supply: 3x1.5V Button Battery Package Included: 1x Digital pH MeterNote: Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.