Multifunctional water quality meter with backlight – pH, TDS, EC, salinity, temperature – No batteries or powder test kits required

High-precision 5-in-1 device: This multifunctional Bluetooth test pen reliably measures pH, total dissolved solids (TDS), electrical conductivity (EC), salinity, and temperature – ideal for comprehensive water quality monitoring. Smart app control: Activate Bluetooth, launch the app, and use the intuitive touchscreen operation – no buttons, full-screen display, and customizable backlight – all conveniently from your smartphone. Intelligent automatic temperature compensation: The pH sensor features precise temperature compensation from 0.1°C to 60°C, ensuring reliable measurements under all environmental conditions. Highly sensitive and robust electrode: The highly sensitive glass electrode is waterproof, corrosion-resistant, and removable for easy maintenance and a long service life. Versatile and professional applications: Perfect for drinking water, swimming pools, aquariums, aquaculture, hydroponic systems, wastewater treatment, water purification, and much more. Also suitable for medical applications. Technical specifications: pH: 0.00–14.00 (resolution 0.01, accuracy ±0.05). TDS: 0–999 ppm / 1000–9990 ppm (accuracy ±2% FS); EC: 0–9999 µS/cm to 200.0 mS/cm (accuracy ±2% FS); Temperature: 0.1–60.0 °C (accuracy ±0.5 °C); Salt: 0.01–25.00% (accuracy ±2% FS). pH calibration: points 4.00 / 6.86 / 9.18 or 4.00 / 7.00 / 10.01; EC/TDS/Salt Calibration: Solutions 1413 µS/cm, 12.88 mS/cm, 111.8 mS/cm. Integrated Bluetooth 5.2, operates on 3 LR44 batteries (not included), dimensions: approx. 187 × 37 × 37 mm. Package contents: 1 digital water test pen + 1 protective cap + 1 instruction manual (French). This product is sold by xiaosong on behalf of a third-party seller. It is compatible. Thank you for your understanding and support.