4 in 1 Digital Water Tester TDS EC & Temperature(°C °F) Meter 0-9990 PPM Water Quality Tester Pen Accurate Backlit LCD Display for Drinking Water RO/DI System Aquariums PoolFeature:1. Precision Water Analysis: Master your water quality with our digital water tester, offering professional-grade accuracy for TDS levels. Its superior detection capabilities ensure you're informed about the purity of your water, contributing to a healthier lifestyle.2. Consistent TDS Reporting: Our TDS meter, equipped with a premium titanium alloy probe and high-precision processing, promises consistent and reliable water testing results for any application.3. All-in-One Water Testing: The multifunctional prowess of our EC meter & temperature meter is unmatched, providing a 4-in-1 solution that measures TDS, EC, and temperature in both Celsius and Fahrenheit. Its user-friendly interface, complete with a backlit LCD and auto-lock feature, streamlines your water testing process.4. Purity Testing Made Versatile: The versatile TDS EC & temperature(°C °F) meter is an indispensable tool for ensuring the purity and safety of drinking water. Ideal for RO/DI systems, aquariums, hydroponics, pools, and spas, it's the benchmark for maintaining optimal water quality in a variety of settings.5. Health-Conscious Water Testing: Offer the gift of well-being with our easy-to-handle water quality tester pen. It's the ideal present for anyone keen on ensuring the purity of their water, from family to friends, making every sip a reassurance of quality and health. Specification:Origin: Mainland ChinaAccuracy: ±2%TDS measurement range: 0~9990PPM Conductivity measurement rangeAccuracy: 1ppm & 1us/cmInspection items: TDS value, Celsius, Fahrenheit, EC conductivityTemperature range: 0.1~88.0°/32.0~176.0°FAuto backlight: YesBattery: 3V button battery (not included, need to bring your own)Shell material: ABSProduct size: about 155.00x31.00x15.00mmProduct size: 6.1x1.22x0.59inch Package includes:1pc x Water Tester  Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.