How to Calibrate Images for the NF-521 Thermal Imager 

1. 2-megapixel white lens
2. 2.4 TFT LCD Display
3. Temperature testing range: -10°C ~ 400°C
4. 32×32 pixel resolution, 33° Field of View
5. Merging visible and infrared image display
6. Chargeable Li-ion battery (charge by micro USB interface)
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