Feature:* .* 3-in-1: can be used in water Ppurifiers & Filters, Food (Vegetable, Fruit) & Beverage Quality Monitoring, Swimming Pools & Spas, Aquarium, Hydroponics* Easy to Use: The water sampler will lock the measurement result when you press the "HOLD" button and automatically shut off after a few minutes of non-use. The PH tester has an automatic calibration function and you can get a reading quickly.* High accuracy: The numbers of pH meters range from 0.00-14.00 (PH), while the numbers of digital ECs and meters range from 0 to 19990 ppm. PH resolution is 0.01ph, accuracy ± 0.05ph. : 0 - 9990ppm, conductivity: 0 - 9990us/cm, accuracy: ± 2%, reliable and fast readings.* Easy calibration: The pH tester automatically calibrates at three points (calibration only at 6.86 points: accuracy at 0.1 pH). You don't need any tools; Simply remove the protective cover and immerse the pH electrode in the solution. Press "ON/OFF" to open the electronic pH meter, stir lightly and wait a few seconds for the readings to be stable. Specification:* Size: 154mm*30mm*14mm* Measuring Range:EC: 0-9990us/cm.TDS: 0-9990ppm.* Dearees Celsius: 0.1-80.0 Celsius.* Fahrenheut: 32.0-176.0 Accuracy: ± 2%Package Contents:1 X Water Quality Tester1 X User Manual1 X BagNotes:1. Due to many factors, such as display brightness, light brightness, etc., the actual color of the product may be slightly different from the picture displayed on the website.2. Please allow slight deviation of the manual measurement value in the data.