Features: Measurement range -40°C to +300°C, 8Hz dynamic refresh rate. 2.8" screen resolution is 320x240; the screen can display and track maximum-temperature, minimum temperature and center-point temperature. The cover is FR4 epoxy sheet, which better protects the internal components and has a long service life.Small size, easy to carry. Powered by Li-ion battery. Type-C charging; up to 4 hours of battery life. Can be used while charging. Built-in SPI Flash chip, which can store 100 pictures. View and copy images files by connecting a computer or mobile phone with a data cable.All-in-one design, no external equipment required. Specifications: Material: epoxy resin board + printed circuit board Infrared sensor: MLX90640ESF-BAB Hardware resolution: 32x24 pixel far infrared array Screen resolution: 320x240 pixels Temperature measurement range: -40°C to 300°C, Measurement accuracy: ±2°C, Operating temperature: 0 to 50°C, Working humidity: ≤70% Refresh rate: 8Hz Field of View: Horizontal 55° x Vertical 35° Emissivity: 0.95 Charging specification: USB-Type-C5V/1A Product size: 85x55x30mm/3.35''x2.17''x1.18'' Battery: 3.7V 800mAh Li-ion battery Working time: ≥4 hours Package Includes: 1x Infrared Thermal Imager note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.