Summary: The ozone detector is suitable for testing the ozone concentration of water in large, medium and small water plants, industrial and mining enterprises, swimming pools and other places, so as to control the ozone of water to meet the specified water quality standards. Product advantages: small size, easy to carry, reduce the requirements of the user, and can provide reliable test results. Technical indicators: 1. Measurement range: 0-2.5mg/L 2. Power voltage: Portable: dc 1.5v ×5 AA alkaline dry batteries, Ac 220V/50Hz/ dc7.5v / 0.2a power adapter, automatic shutdown, ac and dc. Desktop: ac 220V/50Hz 3. Resolution: 0.01mg/L 4. Repeatability: 1% 5. Linear error: ± (5% FS+1 word)