Feature 1It is a multifunctional water quality meter that can measure the pH/temperature/EC/CF/TDS of the solution. 2Easy to calibrate, just use a mini screwdriver to easily perform pH and TDS calibration. 3Suitable for fountains, aquariums, hydroponics, spas, swimming pools and other water systems. 4Large and clear display screen, easy to read the displayed value. You can monitor online for a long time. 5Lightweight and portable design, convenient for indoor and outdoor use. Made of high quality material, durable.Item Type: Water Quality TesterMaterial: PlasticColor: As shown in the pictureWeight: Approx. 643g / 22.7ozBattery: AA NI-MH battery 110mah (built-in battery)Measuring Range:PH: 0.00~14.00PHTemperature: 0~50EC: 0.00~19.99ECCF: 0.0~199.9CFTDS: 10~9990PPmResolution:PH: 0.01PHTemperature: 0.1EC: 0.01ECCF: 0.1CFTDS: 10ppmAccuracy: PH0.1PHTemperature: 1.0EC, CF, TDS: 2%F.SHow to Use1. Insert the measuring probe into the instrument.2. Plug in the power connector.3. Put the monitoring head into the liquid to be monitored.4. The value can be displayed. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Water Quality Tester2 x Probe2 x Suction Cup1 x Screwdriver1 x Adapter1 x Plastic Bracket1 x Instruction Manual