**Revised Description:** **Features:** - **4-in-1 Testing:** Measures pH, TDS, EC, temperature, and chlorine levels for comprehensive water analysis. - **Bluetooth Connectivity:** Sync with a mobile app via BT to view test results remotely. - **Backlit LCD Screen:** Clear visibility in low-light conditions; backlight can be controlled via the app. - **IP67 Waterproof:** Suitable for underwater use with extended durability. - **Custom Alerts:** Set high/low limits for pH/EC/TDS/ORP; values outside the range appear in red for warning. **Specifications:** - **pH Range:** 0.1�C14.0 (Resolution: 0.1, Accuracy: ��0.1) - **Chlorine Range:** 0.1�C4.0mg/L (Resolution: 0.1mg/L) - **TDS Range:** 0�C9990ppm (Resolution: 1/10ppm, Accuracy: ��2%) - **ORP Range:** -999 to +999mV (Resolution: 1mV, Accuracy: ��15mV) - **Temperature Range:** 0.1�C80��C / 32.1�C176��F (Resolution: 0.1, Accuracy: ��0.5) - **Material:** Plastic | **Color:** Blue **Package Includes:** 1 �� Water Quality Tester *Note: Slight color variations may occur due to lighting or display differences. Measurement tolerance: ��1�C3cm.* Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin