Thermal Imaging Features: With built-in rechargeable lithium battery and micro USB interface, you dont have to worry. The refresh rate is 8Hz, the target temperature measurement is -40~+300, and the usage environment is 0~50. Emissivity is adjustable from 0.1 to 0.99. Probe field of view angle, standard 75 degrees * 110 degrees MLX90640BAA probe. The 2.4-inch LCD screen has a resolution of 320*240. The screen displays the maximum temperature, minimum temperature, midpoint temperature, and each coordinate point. The measurement accuracy is 2, and the center range is 0~100. Photography function: built-in memory, can take 100 photos. After connecting the micro USB cable to the device, you can view, copy, and delete images on your computer. Wide range of applications: It can be used for human body temperature detection, component temperature detection, floor heating temperature detection, automobile parts temperature detection, electrical switch temperature detection, air conditioner and microwave oven detection, etc. Specification: Material: ABS Colour: Black Display: 2.4-inch color display, 320*240 Resolution: 32*24 Field of view: 75*110 Temperature measurement range: -40~300 Measurement accuracy: 2 Refresh rate: 8Hz No calibration required Emissivity: 0.1~0.99 adjustable Power supply: 1*lithium battery, 1000mAh (included) Charging time: about 2 hours Charging method: Type-C 5V/1A Working temperature: 0~50 Product size: 160*56*20mm/6.3*2.2*0.8 inches Tips: Please allow 1-3cm error of measurement. Photo color might be a little different from the actual product due to color display of different monitors. Product Includes: 1 x thermal imaging camera 1 charging cable