Better Humanization: The water quality tester automatically shuts down after 8 minutes of inactivity when disconnected from Bluetooth. When ready for use, it automatically reconnects via Bluetooth for improved user convenience.Bluetooth Features: Compatible with iOS and Android devices, supports Tuya app connectivity. Enables real-time data transmission between the device and smartphone within a 10-meter range.Reliable Performance: The water quality testing pen supports email data export, allowing scheduled data reports to be sent hourly, daily, weekly, or monthly via email.Supported Languages: English, French, German, Russian, Japanese, Korean, Spanish.5-in-1 Function: Measures EC, TDS, SALT, S.G, and temperature in one device, providing a comprehensive and efficient testing experience.Item Type: Water Quality Tester Battery: 2 x CR2032 Button Battery Measurement Range: - EC: 019900 S/cm, 0199.0 mS/cm - TDS: 019900 ppm, 0199.0 ppt - SALT: 0199.0 ppt, 0%20% - SG: 0.9901.400 - Temperature: 0C50C (32F122F) Resolution: - EC: 1 S/cm (up to 1999 S/cm), 0.1 mS/cm - TDS: 1 ppm (up to 1999 ppm), 0.1 ppt - SALT: 1 ppm (up to 1999 ppm) Accuracy: 2% F.S. for EC, TDS, and SALT Temperature Compensation: 0C50C Working Temperature: 0C50C Color: White & Green Material: ABS Size: 18 x 4 x 1.5 cm / 7.1 x 1.6 x 0.6 in Package Contents: 1 x Water Quality Tester Note: Other items not included. Note: Lighting and display differences may cause slight color variations. Measurement error: 13 cm.