Feature: 1. Wide range of application, suitable for the detection of ozone concentration in large and medium sized water plants, industrial and mining enterprises, swimming pools and other domestic or industrial water. 2. Professional measurement, its work is stable, can be installed with batteries or plug in use (Batteries Not Included), can use different power storage modes in different environments, and easily cope with power failures. 3. Large window digital design, it has a high definition display with black characters, equipped with a waterproof button, you can use it with confidence, you don't have to worry about liquid entering the inside of the machine that will affect the service life and safety issues. 4. Portable suitcase, it is easy to carry, the foam is filled in the box to ensure the protection of the equipment, and the sliding cover is designed to protect the safety of the sample in the event of an accident. 5. Beautiful design, its appearance is simple and elegant, placement and storage can be integrated into the style of home, you can easily use it to control the ozone in the water to meet the required water quality standards. Specification: Item Type: Tester Model: Y-615 Material: ABS Power Supply: 5x1.5V AA Batteries (Batteries Not Included) Purpose: It is suitable for ozone water quality test. Measuring Range: 0-2.5mg/L Resolution: 0.01mg/L Repeatability: 1% Linearity Error: ±(5%FS+1). Package List: 1 x Detector (Battery Not Included)1 x Power Adapter1 x Data Line2 x Cuvette1 x Cuvette Box1 x Suction Tube1 x Manual1 x Toolbox Note: 1. The use environment must meet the working conditions.2. The measurement room must be kept clean, dry and dusty for a long time. Cover it and place it in the shade when not in use.3. When the climate is humid, the power on time must be extended accordingly.4. The tested solution should be carefully washed along the cuvette to prevent foaming and affect the accuracy of the measurement.5. The colorimetric tube must be recalibrated after replacement or repair.6. Non professional maintenance engineers should not open the instrument for maintenance.