Features： 1、Data Synchronization Display: Just immerse the electrode in the solution to be tested, the data will be synchronized to the mobile APP, multiple data display at the same time, convenient and fast. There is no need to operate the water pen frequently to view data. 2、Wireless Control: Support bluetooth control, mobile phone full screen multi parameter display, mobile phone control backlight display. 3、Custom Settings: You can set the maximum and minimum values for measurement, and set the high or low values of PH/EC/ORP according to user requirements. If the test result is higher or lower than the range, the value will be displayed in red. 4、High Protective Level: IP67 is an waterproof certification that prevents water penetration and is suitable for short soaks, having good performance for long service life. 5、Date Function: Automatic data storage and sharing. Data can be saved automatically or manually, saved data can be exported to Excel, but also can be shared with your friends. Specification： Item Type: Water Tester Material: ABS Color: As Picture Shown Application: for Drinking Water, Aquarium, Laboratory, Swimming Pool, Fish Tank, Irrigation, etc Product Size: Approx.160x80x80mm/6.3x3.1x3.1in Gross Weight: Approx.320g/11.3oz Battery: 3 x AAA 1.5V Battery (Shipped Without Battery) PH Range: 0.1-14.0pH Resolution: 0.1 PH PH Range: ±0.1pH CL Range: 0.1 4.0 Mg/L Resolution: 0.1 Mg/L EC Range: 0-1999 Mu S/Cm; 2000-10000 Mu S/Cm 10.01 20.0 MS/CM Resolution: 1μS/Cm; 10 Mu S/Cm; 0.01 MS/Cm; Accuracy: ±2%F.S TDS Range: 0-999 Parts Per Million; 1000-9990 PPM. Resolution: 1 PPM; 10 PPM. Accuracy: ±2%F.S ORP Scope: -1200~+1200m Resolution: 1mV Accuracy: 15mV TEMP Range: 0.1 DegreeC-80.0 DegreeC；32.1 DegreeF-176 DegreeF Resolution: 0.1 DegreeC；0.1 DegreeF 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；111.8mS/cm ORP: 256mV ATC Temperature: 0.1 DegreeC-60.0 DegreeC Ambient Temperature: 0.1 DegreeC-80.0C Relative Humidity: Maximum 90% TDS Coefficients: 0.1-3.0 (Factory Default 0.5) EC Temperature Compensation: 0.1-3.0%/ DegreeC (Factory Default 2.0%/ DegreeC) Bluetooth: Mobile Bluetooth Supports Version 5.2 Backlight: With Backlight, Support Movement Control Data: Save: As An Excel Worksheet Printing: Support Waterproof: IP67 Data Store: Indicates Latest 1000 Records Package List： 1 x Water Tester(Battery Not Included) 1 x Manual