[SPEED & ACCURACY] Features the latest sensor and probe technology to deliver fast, reliable readings in seconds. Gets accurate results with just 1 inch of water. Includes a large backlit LCD screen for easy viewing in low light. [EASY TO USE] This 3-in-1 handheld digital TDS meter provides instant water quality testing. Compact design includes a protective case for portability, making it ideal for on-the-go use. [MULTIPURPOSE USE] Ideal for testing drinking water, reverse osmosis (RO) systems, deionization (DI) systems, aquariums, hydroponics, pools, spas, and various commercial and industrial applications. [3-IN-1 MEASUREMENTS] Measures TDS, EC, and temperature with one device. Combines convenience, efficiency, and cost savings into a single essential water testing tool. [NOTE: EPA recommends TDS levels below 500 ppm for drinking water] [AUTO-OFF AND HOLD FUNCTION] Automatically powers off after 2 minutes of inactivity to extend battery life. Includes a hold function to lock readings for easy viewing and recording. Color: White Material: Plastic Package Contents: 1 x Water Quality Tester Note: Light reflection and display differences may cause slight color variations between the image and the actual product. Measurement error allowance is +/- 1-3 cm.