Feature: 1. Multi Purpose: Bluetooth PH meter adopts high accuracy planar electrode, which can measure dough, skin,fruit, solid, liquid, etc. 2. LCD Display: Skin PH meter adopts LCD large screen display, which is clear, soft light and not dazzling, and can easily cope with various environments. 3. Data Synchronization: Smart PH tester can display data synchronously, and the instrument data will be synchronized to the mobile APP, which can display multiple data at the same time. 4. Exchangeable Electrode: The electrode of pen type PH tester can be replaced and maintained more conveniently. 5. Compact Portable: PH meter is compact in structure design, small in size, and convenient to carry and use in a bag. Specification: Item Type: Bluetooth PH Meter Material: ABS PH Range: 0.00-14.00 Temperature Range: 0.1°C-60.0°C, 32.1°F-140.0°F Temperature Resolution: 0.1°C; 0.1°F Temperature Accuracy: ±0.5°C PH Calibration: 6.86/4.00/9.18 or 7.00/4.00/10.01 (two Optional Calibration Modes) You Can Check the Calibration Record. Replaceable Electrode: Diamond Electrode (3.3 KCL M Electrode Storage Solution). Temperature ATC: 0.1°C-60.0°C Environment: 0.1°C-80°C; Relative Humidity: 90% Maximum Waterproof: IP67 Battery: 4 x 1.5V (lR44) Not Included; Low Battery Indicator Bluetooth: Bluetooth Mobile Phone Version 5.2 Mobile Phone Control: Support Widely Used:Can Measure Dough, Skin,Fruit, Solid, Liquid, Etc. Weight: Approx. 251g / 8.9oz. Package List: 1 x Bluetooth PH Meter 5 x Test Package1 x User Manual Note: 1. Delivery with test powder package.2. Shipped without built in battery.3. After the instrument is connected to the APP, it is necessary to locate the mobile phone to successfully connect. 4. Frequent application updates. After upgrading, the old version can be connected or used. Just uninstall the old application and download the new version. Connect the meter to the new version of the application again.