Features: Built-in rechargeable lithium battery, Micro USB interface, you do not need to worry about the power. The refresh rate is 8Hz, the target temperature measurement ran-ge is -40~+300& 8451;, and the use environment is 10~50& 8451;. The emissivity can be adjusted from 0.1 to 0.99 range. Sensor probe field angle, default 75 degrees*110 degrees MLX90640ESF-BAA probe. 2.4 inch LCD screen resolution is 320*240, the screen shows the highest temperature, the lowest temperature, the center point temperature, displays each coordinate point. Two color modes can be selected: iron red and rainbow. With photo taking function, built-in memory, you can take 100 photos, without using other tools, use Micro USB cable to connect directly to the computer, you can browse, copy, delete pictures. Can be applied to human body temperature detection, PCB component heating temperature detection, floor heating temperature detection, automotive parts temperature detection, electrical switch temperature detection, air conditioning and microwave oven detection, etc. Specifications: Material: ABS Color: blue+red Resolution: 32*24 Temperature measurement range: & 8208;40& 8451;~300& 8451; Measurement accuracy: ±2& 8451; (center area, 0~100& 8451;) Working temperature: 10& 8451;~50& 8451; Working humidity: ≤70% Refresh rate: 8Hz No calibration required Sensor field angle: 75° * 110° Emissivity: 0.1~0.99 adjustable Display center point, highest and lowest temperature Color modes: iron red, rainbow Battery: 1 * lithium battery, 750mAh (included) Use time: 4h Recharging time: 1.5h Power jack: Micro USB 5V/1A Item size: 87 * 53 * 20mm / 3.4 * 2.1 * 0.8in Item weight: 58g / 2.0ounce Package size: 135 * 70 * 30mm / 5.3 * 2.8 * 1.2in Package weight: 105g / 3.7ounce Note: it is recommended to fully charge the thermal imager before connecting it to the computer, and then connect to the computer after shutting down. Package list: 1 * Thermal Imager 1 * USB Cable 1 * Lanyard