The water quality monitor is professional and useful tool for testing pH of solution level. Suitable for aquarium pool, drinking water and environment water. Features: Widely used to test the pH of solution/water. Imported IC and high cost performance. Easy calibration of pH with just a mini-screwdriver. Electrode probe can be replaced, ATC function. Automatic temperature compensation. Large and clear LCD with backlight, easy to read and accurately testing functions. Apply in water sources, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. Specifications: Range: pH: 0.00 ～ 14.00pH Resolution: pH: 0.01pH Accuracy: pH: ±0.1pH  Temperature Compensation: 0°C ～ 50°C (32℉ ～ 122℉) Working temperature: 0°C ～ 50°C (32℉ ～ 122℉)  Power Supply: DC 6V (Power-supply Adaptor) Plug Type: EU / US (Optional) Input Voltage: 100～240V   Battery: 4×1.5V AG13/LR44 Button Cell Batteries (NOT Included) Color: Black Material: ABS Length of pH Electrode Line: Approx. 118cm / 46.5in  Item Size: Approx. 75 * 55 * 28mm / 2.9 * 2.2 * 1.1in  Item Weight: Approx. 49g / 1.7oz  Package Size: Approx. 21 * 10.4 * 5cm / 8.3 * 4.1 * 1.9in Package Weight: Approx. 286.4g / 10.1oz Package List: 1 * pH Meter 1 * User Manual 1 * pH Electrode  1 * AC-DC Adapter 1 * Suction Cups 1 * Bracket 1 * Mini Screwdriver