E27 E26 LED Bulb 980nm IR 3X3W 9W Infrared Light IP Security Cameras illuminator
LED wavelength: 980nm. Wavelength 980nm (no glow, invisible to human eye), Wavelength 940nm (almost no glow), Wavelength 850nm (visible red glow). What's the difference between 850nm, 940nm and 980nm infrared LED illuminators?.