Features: - Water Resistant Design: Meeting daily testing requirements. - Quality Material: Made of quality ABS material, more durable. - Backlight Display: Easy to read and does not affect the use in the dark. - Data Hold: Data recording, convenient for measurement. - Automatic temperature compensation - Replaceable Electrode: High cost performance. - Multiple Measurements: 2 in 1, pH/TDS Measurement. - Wide Application: Suitable for the measuring of drinking water, hydroponics, aquarium, swimming pool, laboratory, etc. Specifications: Plug Type: US/EU/UK (Optional) Material: ABS Color: Black Temperature Compensation: 0-50 Operating Temperature: 0-50 Measurement Range: pH: 0.00-14.00pH TDS: 0-19.99ppt Resolution: pH: 0.01pH TDS: 0.01ppt Accuracy: pH: 0.1pH TDS: 2%F.S Item Size: Approx. 12.8*8.8*2.5cm / 5.04*3.46*0.98in Item Weight: Approx. 154g / 5.43oz Package Size: Approx. 30*18*6.5cm / 11.81*7.09*2.56in Package Weight: Approx. 538g / 18.98oz Note: Please read the Users Manual before use. Packing List: 1 * Digital Tester 1 * Probe Line 1 * Screwdriver 1 * Sensor Interface Silicone Dust Cover 1 * Bracket 2 * Sucker 1 * Power Adapter 1 * Users Manual(English)