Features:1.Accurate and Reliable Results: Featuring a high-precision chip and premium titanium alloy probe, our digital water tester ensures accurate results every time. Equipped with cutting-edge technology for precise testing. Why wait? Experience reliable testing performance now.2.Multifunctional 4-in-1 with 5-Level Upgrade: This digital water quality tester includes TDS, EC, Celsius, and Fahrenheit measurements. It boasts a large backlit LCD, auto-lock, factory calibration, hold feature, and auto-off after 2 minutes to save battery life.3.Two User-Friendly Features: The LCD of the digital water tester is 25% larger than older models, making it easy for everyone to read, including seniors and kids. It also includes a handy TDS chart on the back and in the user guide for quick PPM reference.4.Versatile TDS Tester: Test drinking water purity for safety and health. Monitor RO/DI systems, aquarium maintenance, hydroponics, well water, pools, hot tubs, spas, tap, bottled water, and more with our digital water quality tester.5.Gift of Health: Searching for the perfect gift? Our water testing kit is your top choice! This easy-to-use device quickly tests any water source's purity, ensuring clean, healthy water for consumption - ideal for health-conscious loved ones or outdoor enthusiasts. Specification:Origin: Mainland ChinaSize: 157.00x32.00x16.00mm/6.18x1.26x0.63inchMaterial: PlasticEC Range: 0 - 9990 μS; 0 - 9.9 mSTDS Range: 0 - 5000 ppm; 0-8560 ppmTemperature Range: 0-55°C(32°F-130°F)Accuracy: +/- 2%Battery: 2*1.5V LR44 button batteries (included) Note:Due to different monitor settings and lighting conditions, the actual color of the item may vary slightly from the pictures. Thanks for your understanding!Please allow a 1-2 cm difference in measurements due to manual measuring.