1.3in1 functionality: PH meter, EC meter, and temperature tester in one device for complete water quality monitoring. 2. Wide application: Ideal for aquarium, swimming pool, fish tank, laboratory, and hydroponics, serving a broad user range. 3. accuracy and fast readings: Provides fast, accurate measurements with 0.01 pH resolution and ±0.1 pH accuracy for critical water testing needs. 4. Userfriendly design: Equipped with a large backlit LCD display, simple onebutton operation, and mode switch for PH/EC/Temp readings. Practical use scenarios In a home aquarium or fish tank, monitor pH, EC, and temperature to maintain stable water conditions and support healthy aquatic life. For swimming pool maintenance, regularly check pH and conductivity levels to ensure safe and comfortable swimming water. In hydroponics or laboratory settings, verify nutrient solution or sample water to support consistent experiments and plant growth.