1. Measuring range -40 to +300, 8Hz dynamic refresh rate2. 2.8 screen resolution is 320*240; the screen can display and track the highest temperature, lowest temperature and center point temperature3. The shell is made of FR4 epoxy sheet to better protect the internal components and has a long service life4. Small size, easy to carry5. Powered by lithium-ion battery. USB-C charging; up to 4 hours of battery life. Can be used while chargingBuilt-in SPI Flash chip, can store 100 pictures. Connect a computer or mobile phone via a data cable to view and copy image files.Integrated design, no external equipment required.Infrared sensor: MLX90640ESF-BABHardware resolution: 32*24 pixel far infrared arrayScreen resolution: 320x240 pixelsTemperature measurement range: -40 to 300Measurement accuracy: 2Working temperature: 0 to 50Working humidity: less than equal 70%Refresh rate: 8HzField of view: horizontal 55 x vertical 35Emissivity: 0.95Charging specifications: USB Type-C5V/1AProduct size: 85x55x30mmBattery: 3.7V 600mAh lithium-ion batteryWorking time:greater than equal 4 hoursColour:BlackMaterial:plastic+metalPackage Contents:1 * Portable Thermal ImagerOnly 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.