Five in one water quality tester that accurately measures TDS, EC, pH, salinity, and temperature, making it suitable for pools, drinking water, and aquariums. Easy to read digital display: clear digital screen provides instant readings for quick and precise monitoring. Portable and lightweight: compact design for both home and professional use, easy to carry anywhere for reliable water testing at your fingertips. Durable and reliable: built with materials for long lasting performance and consistent results across all water testing needs. Use scenarios: Pool maintenance: after refilling or chemical treatments, quickly verify TDS, EC, pH, and temperature to maintain safe swimming water. Drinking water checks: periodically assess water quality to confirm safe parameters before use. Aquarium care: monitor salinity, pH, EC, TDS, and temperature to maintain stable conditions for aquatic life.