Product description: 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. Main function: 1. 2-megapixel white lens 2. 2.4 TFT LCD Display 3. Temp testing range: -20°C ~ 400°C 4. 32×32 pixel resolution, 33° Field of View 5. Merging visible amp; infrared image display 6. Chargeable Li-ion battery Temperature measurement range -20~400℃ Basic accuracy 0℃ to 400 ℃ Accuracy ± 1.8% or ±1.8 ℃ -20℃ to -0.9 ℃ Accuracy ± 3 ℃ Emissivity adjustable 0.1~0.99 Measuring resolution 0.1℃ Response time 150ms Spectral band 8~14um Thermal imaging technique Thermal imaging resolution 32*32(1024 pixels) Electronic shutter No Visible light camera2 megapixels Display resolutionThermal imaging, thermal mixing, digital camera Color palettes Ironbow,iridescence ,Grayscale Infrared spectral bandwidth8~14μm FOV 33° horizontal IFOV18 mrad Thermal imaging sensitivity150mk Frame rate ≤9Hz Image format BMP Monitor 2.4 amp; rdquo; TFT LCD Display resolution 320*240 pixels Battery 3.7V/2600mAh Automatic shutdown function Yes Working temperature -10℃~45℃ Standard accessories ( termasuk ) * Instruction manual * USB cable * 16 GB micro TF card * Rechargeable Battery 3.7V/2600mAh CHARGER TIDAK TERMASUK ( Charger bisa menggunakan Charger untuk Android/ ke USB Port komputer/Laptop )