Feature: 1. APP Real Time Monitoring: Can be connected to Bluetooth, mobile APP real time online monitoring, multi functional water quality tester, professional measurement of ph, orp, chlorine, ec, tds and temperature. 2. Easy to Use: Just dip the pH meter electrode into the solution to be measured, the reading is quickly displayed on the APP, while multi parameter display, mobile APP control backlight display. 3. Cloud Based Data Management System: Accurate real time Bluetooth data transfer with clear measurements. Allows you to save, manage and share your test data at your fingertips and never have to worry about data loss. 4. High Accuracy Water Quality Tester: Our digital water quality tester utilizes a high accuracy algorithmic chip and electrodes to ensure an accurate and fast response. 5. One Touch Lock Reading Function: Automatically sets the time interval for recording measurement results. You can set the maximum and minimum values. When the measurement result is not within the set range, the value is displayed in red. Specification: Item Type: Water Quality Tester Display: LCD digital display Weight: 375g / 13.23oz Material: ABS Backlight: APP control Temperature: Automatic temperature compensation 0.1-60 ℃ Operating Environment: 0.1-80℃ RH: Maximum 90 Battery Type: 3 x AAA batteries (not included) . Package List: 1 x Tester1 x Instruction Manual 1 x Wrench