The 2-in-1 water quality monitor is professional and useful tool for testing pH / EC of solution level. Perfect for wide applications, such as beverage, fish hatcheries, food processing, aquarium, photography, laboratory, quality control, school & 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 / 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/cm Resolution: pH: 0.01pH EC:0.01 ms/cm Accuracy: pH:0.1pH EC:2%F.S Temperature Compensation: 0 - 50 Working temperature: 0 - 50 Length of EC/pH Electrode Line: . 118cm/46.5in Power supply:DC 6V (Power-supply Adaptor) Battery:4x1.5V -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.