describe: 8HZ refresh rate: The refresh rate is 8Hz, and the target temperature measurement range is 40 ~ +300. Suitable for human body temperature detection, PCB component heating temperature detection, floor heating temperature detection, etc. 0.1-0.99 Emissivity: The emissivity is adjustable from 0.1 to 0.99. Sensor probe field of view, MLX90640BAA probe defaults to 75 degrees x 110 degrees. Rechargeable lithium battery: Built-in 1000mAh rechargeable lithium battery and Micro USB interface, no need to worry about power. 2.4-inch LCD screen: The 2.4-inch LCD screen has a resolution of 320x240. The screen displays the maximum temperature, minimum temperature, center point temperature and each coordinate point. Allows connection to computer: built-in memory, can take 100 photos, directly connected to computer using Micro USB cable, can browse, copy, delete photos. Package contents: 1 piece infrared