Feature: 1. Multifunctional Tester: has 5 kinds of functions including test TDS, EC, pH, salinity, and temperature of the liquids. 2. ATC Function \u0026 Calibration: automatic temperature compensation and easy calibration with the included mini slotted screwdriver. 3. High Precision Probe: accurately measure the water quality to protect the health of you and your families. 4. Nice Quality Pen-type Design: ABS materials is lightweight yet High quality, easy to operate. 5. Waterproof Tester: battery compartment is well sealed with silicone ring, the whole pH tester is totally waterproof, it is no problem to soak it into water during test. 6. Wide Application: suitable for water quality testing of drinking water, swimming pool, farmland irrigation, fish tank, etc. Specification: This meter is the perfect solution for simple TDS, EC, pH, Salinity, and temperature measurements. All pH readings are automatically compensated with temperature (ATC). Features: Multifunctional Tester: has 5 kinds of functions including test TDS, EC, pH, salinity, and temperature of the liquids. ATC Function & Calibration: automatic temperature compensation and easy calibration with the included mini slotted screwdriver. High Precision Probe: accurately measure the water quality to protect the health of you and your families. Nice Quality Pen-type Design: ABS materials is lightweight yet High quality, easy to operate. Waterproof Tester: battery compartment is well sealed with silicone ring, the whole pH tester is totally waterproof, it is no problem to soak it into water during test. Wide Application: suitable for water quality testing of drinking water, swimming pool, farmland irrigation, fish tank, etc. Specifications: Material: ABS RANGE: pH: 0.0~14.0pH EC: 0~1999μs/cm, 0~19.9mS/cm TDS: 0~1999ppm, 0~19.9ppt Salinity: 0~42.0‰ Temperature: 0~50℃ RESOLUTION: pH: 0.01pH EC: 1μs/cm (<1999μs/cm), 10us/cm (>1999 us/cm) 0.1mS/cm TDS: 1ppm (<1999ppm), 10ppm (>1999ppm) 0.1ppt Salinity: 0.1‰ Temperature: 0.1℃ ACCURACY: pH: ±0.1pH EC: ±2%F.S TDS: ±2%F.S Salinity: ±2%F.S Temperature: ±0.5℃ Automatic Temperature Compensation: 0~50℃ Operating Temperature: 0~50℃ pH Calibration: 2 points (4.01,6.86), or 1 point (6.86) calibration Auto-off: After 8 minutes Power Supply: 3 * 1.5V LR44 AG13 button battery (NOT included) Item Size: 188 * 38mm / 7.40 * 1.50in Item Weight: 83g / 2.94oz Package Weight: 124g / 4.40oz Package Size: 20.2 * 7 * 4.6cm / 7.95 * 2.76 * 1.81in Packing List: 1 * pH Meter 1 * Mini Slotted Screwdriver 1 * Manual (English) Package List: 1 * pH Meter 1 * Mini Slotted Screwdriver 1 * Manual (English)