1The water quality analyzer can be used to measure the pH and temperature of the solution. 2IP65 waterproof, replaceable sensor probe, practical and convenient to use. 3Automatic calibration function and temperature compensation function, the test accuracy is high. 4Suitable for fountains, aquarium, hydroponics, spas, swimming pools and other water systems. 5It has a wide range of uses and can be used to test the acidity and alkalinity of almost all liquids. Item Type: Water Quality Analyzer Material: ABS Weight: Approx. 163g / 5.7oz Range: PH: 0.00-14.00pH, Temperature: 0-50 (32-122) Resolution: PH: 0.01PH, Temperature: 0.1 (0.2) Accuracy: PH: 0.1pH, Temperature: 1.0 Battery: 4 x 1.5V (AG-13) (battery not included) Temperature Compensation: 0-50 Working Temperature: 0-50 Calibration Method: two-point automatic calibration (instrument electrodes are interchangeable head electrodes) Automatic Shutdown: after the instrument is turned on, it will automatically shut down after 4 minutes Waterproof Rating: IP65 How to Use: 1. Take off the protective cap. 2. Wash the electrode with distilled water and blot it dry with filter paper. 3. Press the switch power supply. 4. Immerse the electrode of the electric meter in the solution until the liquid immersion level. In any case, it is immersed above the level of the display. 5. Press the "temp" key to select PH or temp. Wait until the numbers stabilize. Reading the final value. After use, turn off the switch, clean the electrode with distilled water, and install the protective case. 1 x Host (Battery Not Included)1 x Manual1 x Protective Shell