Features: 4 in 1 Detecting Function: This water quality tester can measure pH, Total Dissolved Solids (TDS), EC, temperature, and chlorine in water to help you fully understand the water quality of the tested sample. Mobile Phone APP Remote View: After connecting your mobile phone via Bluetooth, all testing results can be viewed on the compatible app. LCD Display Screen with Backlight: The backlit display screen allows you to read test data clearly in low light or dark environments. The backlight can be turned on or off using the device controls. IP67 Waterproof Rating: With an IP67 waterproof rating, this device is designed to withstand water exposure and ensure reliable performance in wet conditions. Customizable Alarm Settings: You can set high or low limits for pH, EC, TDS, and ORP according to your needs. When test results exceed these thresholds, values will be displayed in red as a warning indicator. Specifications: pH: Range: 0.1–14.0 pH Resolution: 0.1 pH Accuracy: ±0.1 pH Chlorine: Range: 0.1–4.0 mg/L Resolution: 0.1 mg/L Total Dissolved Solids (TDS): Range: 0–999 ppm, 1000–9990 ppm Resolution: 1 ppm, 10 ppm Accuracy: ±2% F.S. ORP: Range: -999 to +999 mV Resolution: 1 mV Accuracy: ±15 mV Temperature: Range: 0.1°C to 80.0°C (32.1°F to 176.0°F) Resolution: 0.1° Accuracy: ±0.5° Material: Plastic Color: Blue Package Contents: 1 x Water Quality Detector Note: Other accessories shown are not included. Note: Lighting effects and display settings may cause slight variations in color between the product image and actual item. Measurement error tolerance is ±1–3 cm.