Function: 1. Data synchronization display: just dip the electrode into the solution to be tested, the data will be synchronized with the mobile APP, multiple data display at the same time, convenient and fast. There is no need to use the water pen frequently to view the data. 2. Wireless control: support bluetooth control, mobile phone full-screen multi-parameter display, mobile phone control backlit display. 3. Custom Settings: You can set maximum and minimum measurement values and set high or low PH / EC / ORP values according to user requirements. If the test result is above or below the range, the value will be displayed in red. 4. High level of protection: IP67 is a waterproof certification that prevents water penetration and is suitable for short soaks, ensuring good performance for a long time of use. 5. Date function: Automatic data storage and sharing. Data can be saved automatically or manually, saved data can be exported to Excel, but also shared with friends. Specification: Item type: water tester Material: ABS Color: as shown in the picture Application: for drinking water, aquarium, laboratory, swimming pool, aquarium, irrigation etc. Product size: about 160x80x80mm/6.3x3.1x3.1in Gross Weight: Approx. 320g/11.3oz Battery: 3 AAA 1.5V batteries (supplied without batteries) PH Range: 0.1-14.0 pH Resolution: 0.1 PH pH range: 0.1pH CL Range: 0.1 4.0 Mg / L Resolution: 0.1 mg / L IN Range: 0-1999 MuS/Cm; 2000-10000 MuS/cm 10.01 20.0 MS / CM Resolution: 1μS/cm; 10US/cm; 0.01MS/cm; Accuracy: 2% of full scale TDS Range: 0-999 parts per million; 1000-9990 pp. /min. Resolution: 1 page / min; 10 p. /min. Accuracy: 2% of full scale ORP Range: -12001200m Resolution: 1mV Accuracy: 15mV TEMP Range: 0.1C-80.0C; 32.1F-176F Resolution: 0.1 C; 0.1 F Accuracy: 0.5 Calibration (check calibration record) PH: 6.8 / 4.0 / 9.2 or 7.0 / 4.0 / 10.0 EC/TDS: 1413μS/cm; 12.88 mS/cm; 111.8 mS/cm ORP: 256 mV ATC temperature: 0.1 C-60.0 C Ambient temperature: 0.1C-80.0C Relative humidity: maximum 90% TDS coefficients: 0.1-3.0 (factory setting 0.5) EC temperature compensation: 0.1-3.0% / C (factory setting 2.0% / C) Bluetooth: Mobile Bluetooth supports version 5.2 Backlight: with backlight, support movement control Data: Save: as an Excel sheet Printing: Support Waterproof: IP67 Data Warehouse: Indicates the last 1000 records Package List: 1 x water tester (battery not included) 1 x user manual