1. Language setting: Menu in the upper right corner of the main interface: Select the APP language, which supports two language settings. You can adjust it to Chinese or English according to your preferences. 2. Maximum temperature (MaxtTemp), minimum temperature (MinTemp), center temperature (CentTemp): Indicates the corresponding temperature value of the current measurement screen. 3. Layout inversion (LandRevert): Enable the mobile phone layout inversion. In this way, the mobile phone can be rotated and held so that the thermal imager is on the upper part of the mobile phone. Note that some models of mobile phones need to enable the automatic rotation of the interface 4. Multiple color modes (ColorPalette): Iron red, rainbow, white hot, blue orange, blue yellow, you can adjust according to your needs or preferences 5. Temperature range (PaletteScale): -20-1000 measurement range, which refers to whether the highest and lowest temperatures corresponding to the current color scheme automatically follow the upper and lower limits of the current screen temperature or use manual setting values, that is, the upper temperature limit (PaletteUpper) and the lower temperature limit (PaletteLower). 6. Set emissivity (Emissivity): If you only look at the temperature distribution on the surface of the object and do not need to accurately measure the absolute value of the temperature, you can use the default emissivity. If you need to measure the temperature of the object more accurately, you need to check the emissivity of the material to which the object belongs. This product is a mobile phone infrared thermal imager, which needs to be used with a mobile phone APP (currently supports Android system), with a resolution of 32 x 32, plug-and-play, and very convenient. It is widely used in industries and fields such as electronic device development, printed circuit board testing, thermal construction, and contactless temperature measurement. 1 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.