There are have usual infrared ray emit of ir led strips: ir light  940nm&850nm respectively.
Due to the ir led of 940nm infrared photosensitive ability is limited, 940nm at night and 850nm imaging distance there is a gap,so the application is not widespread. At present, the main application of 940nm series infrared light led strips in special field. The advantage is quite obvious.
First,Concealment stronger. Infrared 940nm infrared light strips to work at night, issued by the infrared spectrumare totally beyond human recognition, human eye is not visible directly. The camera using the lamp panel is widely used in the Concealment place, especially suitable for monitoring high confidentiality requirements, is not easy to be noticed.

Second, visual disturbance. Ordinary 850nm infrared light ir led strip at work will be issued more obvious infrared light, to people’s normal work and study there are some visual disturbance, easy to make people tired. Especially in the hospital and other places, too strong infrared light will affect the patient’s rest, causing unnecessary trouble. I f the camera is for internal use infrared light 940nm, that no problem? also need to confirm that the CCD machine inside the machine can sense infrared 940nm.