Sunell thermal cameras outperform a visible camera in low light or even no light at all, and are much less impacted by weather conditions such as fog, smog, rain and snow. And are provide perimeter protection, temperature measurement in 24/7 surveillance.
Infrared camera use short wavelength infrared light to illuminate an area of interest, some of the infrared energy is reflected back to a camera and interpreted to generate an image.
Thermal imaging camera use mid- or long wavelength IR energy, thermal imagers are passive, and only sense differences in heat, and these heat signatures (usually black-hot and white-hot etc.) are then displayed on a monitor.
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