This monitor is part of a line of quality monitoring devices. The Continuous Monitor Series features microprocessor technology, providing reliable and user-friendly operation. Designed for long-term, low-maintenance use, simply plug in the AC adapter, calibrate, and the unit is ready for continuous monitoring. Specifications: Range: pH: 0.00 ~ 14.00 pH Resolution: pH: 0.01 pH Accuracy: pH: 0.1 pH Temperature Compensation: 0C ~ 50C Working Temperature: 0C ~ 50C Power Supply: DC 6V (Power Supply Adapter) Input Voltage: AC 220V Battery: 4x1.5V AG13/LR44 Button Cell Batteries (NOT Included) Features: Widely used to test the pH of solutions or water. High-quality IC with high cost performance. Easy pH calibration using a mini screwdriver. Replaceable electrode probe with ATC function. Automatic temperature compensation. Large, clear LCD with backlight for easy reading and accurate testing. Note: Product design may vary slightly between batches, including minor appearance or color differences, which do not affect functionality. Plug Type: EU Plug, suitable for use in countries such as Germany, France, Spain, Italy, and Indonesia. Material: ABS Color: As shown Package Contents: 1 x Water Quality Analyzer Note: Other items are not included. Lighting and display settings may cause slight color variations between the product image and actual item. Measurement error tolerance is +/- 1-3 cm.