4-in-1 Water Quality Tester for Home and Aquarium - Measures TDS, Electrical Conductivity (EC), and temperature with precision, with temperature readouts in degrees Celsius or Fahrenheit. - Wide measurement ranges: TDS 0-9999; EC 0-9999 uS/cm; Temperature 0-60 C / 32-140 F. - Quick and accurate: power on, dip the probes, and read results instantly. MODE button switches between TDS, EC, and temperature. - Advanced titanium alloy probes and a smart chip deliver stable, high-precision measurements for reliable results. - Auto-lock function holds readings; a TDS value of 40 or higher serves as a warning of potential impurities. - Clear backlit LCD for easy reading in any lighting; large, readable display; a practical tool for water filters and purifiers. - Applications: ideal for testing drinking water, tap water, and aquarium water; suitable for hydroponics, pools, and well water systems. Use scenarios - Home water safety: regularly check drinking and tap water to ensure quality. - Hydroponics: monitor nutrient solutions to optimize plant growth and health. - Aquarium and pool care: maintain stable water conditions to protect fish, plants, and equipment.