Description/Features: Comprehensive Testing: Measures five critical parameters: Total Dissolved Solids (TDS), pH levels, salinity, temperature, and Electrical Conductivity (EC). Bluetooth Connectivity: Easily connect to your smartphone for real-time data monitoring, analysis, and record-keeping. Accurate & Reliable: Provides precise readings to ensure your water is perfectly balanced and safe. Portable Design: Compact and lightweight, making it easy to carry and use anywhere. Wide Applications: Ideal for hydroponics growers, aquarium enthusiasts, and pool owners to ensure the health of their aquatic environments. Specifications: Product name: Water quality detector Working temperature: 0°C-50°C (32°F-122°F) Product application: EC/TDS/SALT/S.G/TEMP Battery type: 4 x 1.5V (AG-13)(Not included) Accuracy: EC/TDS/SALT: ±2%F.S Temp±1.0 Calibration method: automatic calibration Maintenance: After the test is completed, dry the water and keep the motor clean. If it is not used for a long time, please remove the battery and cover the electrode protective cover Material: ABS Color: As shown Due to different batches, there may be differences in product appearance and printed text, which will not affect use Package Contents: 1 x Water quality detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.