1. black LCD display: the light is soft and not dazzling, can easily cope with environments, and simultaneously display PH value and temperature value. 2. High-precision plane electrode: can measure dough, skin, paper, cream, paste, liquid and other electrodes can be replaced, maintenance is more convenient 3. Data synchronization display: The PH meter data will be synchronized to the APP, which can display multiple data at the same time, which is convenient and fast 4. You can set the maximum or minimum value of the measurement by yourself: set the maximum or minimum limit of PH according to user requirements. If the test result exceeds the range, the value will be displayed in red. 5. Wide application: can measure dough, skin, paper, fruit, solid, liquid, etc...... Function: short press the HOLD/TEMP key to keep the data, the screen displays H, long press the HOLD/TEMP key to convert the temperature unit to C/F. Model: YY-1031 Bluetooth: Support mobile phone Bluetooth version 5.2 PH: 0.00-14.00pH Electrode: removable and replaceable Battery: 4*1.5 button battery Temperature: 0.1C-60.0C; 32F-140.0F Waterproof: IP67 waterproof Data: Auto/Manual Save; Print-Share PH Calibration: 6.86/4.00/9.18or7.00/4.00/10.01 Temperature Compensation: 0.1C-60.0C Colour:white + green Material:plastic Package Contents: 1 x Dough Skin Acid-base Test Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.