Digital three-in-one TDS EC and temperature meter with reliable, precise readings for TDS (total dissolved solids), EC (conductivity) and temperature. It includes automatic temperature compensation in measuring mode. Key benefits - Accurate, fast readings: provides TDS, EC and temperature with automatic temperature compensation for reliable results. - Power saving: auto-off after 9 minutes to extend battery life. - Flexible modes: four modes with SHIFT to switch; mode memory restores the last-used mode on next power-up. - Easy recording: large, easy-to-read LCD and data storage function; HOLD automatically locks the measurement; 5-minute automatic lock; SHIFT allows viewing results for different modes while a value is held. - Fast results: measurement completes in about 5 seconds using a high-sensitivity bare sensor. Usage scenarios - Test drinking water quality at home to verify safety and compliance. - Monitor hydroponics or nutrient solutions to ensure appropriate conductivity and strength. - Check aquarium or fish tank water to maintain healthy conditions for aquatic life.