【Convenient Everyday Testing, Anywhere】Ideal for both indoor and outdoor use, this portable water tester features an ergonomic non-slip design for a secure grip. With auto shut-off and quick 1–3 second auto-calibration, it's the perfect digital water tester for drinking water. 【All-New 4-in-1 TDS Meter Digital Water Tester】This multi-function digital water tester offers advanced 4-in-1 functionality, measuring Total Dissolved Solids (TDS), Electrical Conductivity (), temperature (°C/°F), and includes a color-based water quality indicator, making it perfect for drinking water, pools, hydroponics, and aquariums. 【Color-Based Alert System for Quick Assessment】 With our innovative color display, this digital water tester allows you to quickly assess water quality. The screen displays green when TDS is between 0–50 and turns red for values above 50, ensuring easy of your water tester for drinking water needs. 【Accurate Sensor with Auto Temperature Compensation】Our TDS meter digital water tester is equipped with a titanium alloy probe and Auto Temperature Compensation (ATC) technology, which supports stable and accurate readings even in varying temperatures, providing reliable results for drinking water analysis. 【A Thoughtful for Water Quality Enthusiasts】 This versatile and user-friendly water tester makes a great for new homeowners, -focused families, or outdoor hobbyists who value water quality. Easy to operate, the TDS meter digital water tester is an tool for anyone concerned with their drinking water quality. 【Material composition】: Plastic 【 Dimensions】: 6.7x2x0.8 inches 【Contents】: 1 test pen For more affordable and high-quality items, please search or click on the brand： Service: If you have any questions about our products, please feel free to contact us, we will reply to you as soon as possible, I wish you a happy shopping!