5 in 1 Water Quality Test: The pH meter is designed with 5 in 1 function, which can measure PH, TDS, EC, salinity and temperature at the same time with high precision. All-round water quality measurement to ensure accurate water quality measurement: To achieve high precision, it is equipped with a high-quality titanium alloy probe and reliable automatic temperature compensation (ATC), which can ensure accurate readings at different temperatures. Auto Power Off Function: The auto power off function will cut off the power after 5 minutes of inactivity to save energy. IP67 waterproof grade: IP67 is an international waterproof and dustproof certification. Protect from dust intrusion, soak for a short time. Wide range of uses:: This water quality tester is ideal for testing water, swimming pools, aquariums, spas, hydroponics, laboratories, and drinking water, etc. Product parameters Conductivity test range: 0-10,000uS/cm 10.01-19.99ms 20.1-400mS/CM Resolution: 1 sec/cm; 0.1mS/cm Accuracy: 2% of reading Tds test range: 0 to 1000ppm 1000ppm to 10000ppm 10.1 to 200.0ppt Resolution: 1ppm; 0.1 percentage point Accuracy: 2% of reading Salinity measuring range: 0.0025.00% Resolution: 0.01% Accuracy: 0.01-5.00% (0.1%) 5.10-25.00% (1%)pH test range: 0.01-14.00 pH Resolution: 0.01 pH Accuracy: 0.05 pH Temperature Compensation: Automatic Temperature Compensation (ATC) Operating environment: 0 to 60.0C (32.0 to 140F); 100% relative humidity TDS Factor: 0.4 to 1.0 Temperature range: 0.1-60.0 32.0-140 Temperature accuracy: 0.5 Temperature resolution: 0.1C/F Automatic shutdown: 5 minutes 3x1.5LR44 Display size: 33*24mm Dimensions and Weight: 183*37*37mm (7.2*1.5*1.5inch)/90g (3.2oz) Display: backlight not supported Power consumption: 2.9mA, power consumption is 0 when shutdown The accuracy is relatively accurate within 150ppt, and the deviation is relatively large above 160ppt. Precautions: After each use, be sure to clean the electrode Package includes: 1*water quality test penNote: 1. Please allow a little error due to manual measurement. Please make sure you don't mind before bidding. 2. The color may vary due to different monitors, please understand. Note: Hello, please pay attention to your delivery address when purchasing products. If your receiving information (such as: name, street, house number, doorbell/email without name and other information is incorrect, the order will not be delivered correctly.)