5-in-1 PH Meter Waterproof Multifunctional TDS/EC/pH/Salinity/Temperature Meter Water Quality Tester Blue Backlight LCD Display With ATC Function The product is shipped based on the color or size of the main image of the product page. 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 durable, 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 (1999 us/cm) 0.1mS/cm TDS: 1ppm (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)