The primary difference between 850nm and 940nm infrared LED strips is their visible emission and application requirements.
850nm infrared LED strips produce a faint red glow that may be visible in dark environments. They are commonly used in CCTV systems, night vision illumination, machine vision, and other applications where maximum infrared output is preferred and slight visibility is acceptable.
940nm infrared LED strips emit virtually no visible light, making them suitable for applications requiring discreet or concealed infrared illumination, such as covert monitoring systems, infrared sensing equipment, and specialized industrial applications.
Both wavelengths are suitable for infrared lighting and night vision systems. The appropriate choice depends on the required balance between infrared performance and visible light concealment.