The 2-in-1 water quality monitor is professional and useful tool for testing pH or EC of solution level. Perfect for wide applications, such as beverage, fish hatcheries, food processing, aquarium, photography, laboratory, quality control, school and colleges, swimming pools, water conditions. Separate pH and EC electrode, precise measurement. Can online monitor for a long time. Apply in water sources, aquarium, hydroponics, spas, swimming pools and other water systems. Automatic temperature compensation. Use to measure the pH or EC of solution. Easy calibration of pH and EC with just a mini-screwdriver. Large and clear LCD with backlight, easy to read and accurately measuring functions. Range: pH: 0.00 - 14.00pH EC: 0.00 - 19.99ms or cm Resolution: pH: 0.01pH EC:0.01 ms or cm Accuracy: pH:±0.1pH EC:±2 percent F.S Temperature Compensation: 0 ℃- 50 ℃ Working temperature: 0 ℃ - 50 ℃ Length of EC or pH Electrode Line: Approx. 118cm or 46.5in Power supply:DC 6V (Power-supply Adaptor) Battery:4x1.5V AG-13 Button Cell Batteries (NOT Included) Note:Installation guide not included, Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC220V Colour:As Shown Material:Plastic Package Contents: 1 2-in-1 PH EC Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.