NF-521 has thermal imaging function and can display hot and cold spots on the screen, enabing users to oberve the object temperature changes more effectively. It helpls you to quickly lock the target area. The standard 8GB memory card can save a large number of images and data and generate high-quality infrared images, which is a useful tool for fault maintenance. Features: High resolution. Visible light 2 million pixels, 1024 thermal imaging pixels are clearly visible. 3 color imaging modes. The instrument provides 3 color palettes: iron red, rainbow, grey. Choose suitable color palettes to show the details of the target object. Two image-fusion functions. Contourline and thermal imaging-fusion display, visible light and thermal imaging-fusion. This instrument supports two visual mode switching, which can be compared according to the two measurement diagrams to find the fault point. It is an nice choice for electricians and maintenance technicians and can be used to quickly find the problem area. Large capacity image-storage. Standard 8GB mini memory card with large capacity can store various measurement images. USB to read images quickly. The captured pictures saved in the instrument can be viewed and exported by connecting to a computer, which is convenient and quick. Specifications: Technical indexes: Infrared temperature measurement Temperature measurement range: -10~400 Basic accuracy: ±2% or ±2.0 Emissivity: adjustable 0.1~0.99 Measuring resolution: 0.1 Response time: 150ms Spectral band: 8~14um Thermal imaging technique Thermal imaging resolution: 32*321024 pixels Visible light camera: 2 megapixels Display resolution: thermal imaging, thermal mixing, digital camera Color palettes: iron red, rainbow, grey Infrared spectral bandwidth: 8~14m FOV: 33° horizontal IFOV: 18 mrad Thermal imaging sensitivity: 150mk Frame rate: ≤9Hz Image-format: BMP General parameters Display resolution: 320*240 pixels Battery: 3.7V, 2600mAh Memory card: 8GB Working temperature:-10~45 / 14~113 Drop proof: 1m Main color: black+red Main material: plastics Item size: 210 * 120 * 60mm / 8.3 * 4.7 * 2.4in Package size: 230 * 140 * 80mm / 9.1 * 5.5 * 3.1in Package weight: 500g / 1.1lb Packing List: 1 * Thermal Imager 1 * USB Cable 1 * Memory Card 1 * User Manual