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Why do surveillance cameras glow red light at night?

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Before we tap into the infrared LED lights, you need to know that there are typically two wavelengths for infrared security cameras to choose from: 850nm vs 940nm. Pros and Cons of 850nm: All cameras are most sensitive to 850nm infrared light, and... read more

However, the infrared security cameras with the wavelength of 850 nm will have a conspicuous red glow that attract the attention of burglars, bugs or spiders. Pros and Cons of 940nm: The 940nm infrared light demands a highly sensitive infrared night vision security camera and gives off invisible lighting. read more

750nm - Street Light Glow 850nm - Slight Glow 950nm - Invisible Most BW cameras will work with 850nm. Price doesnt matter much, but the camera itself does. If you are looking for a day night camera alot of them now will list in their specs what they work with as far as IR, GE Kalatel does that, for example. read more

It is important to note that although most cctv cameras with night vision give off a familiar red glow, not all of them do. Some of the most sophisticated smart cameras use infrared (they have night vision) but their LEDs do not glow. An example of this is the Nest Cam IQ. read more

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Outdoor IR CCTV Camera Zero Light Infrared Video ...
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