We are IR LED manufacturer from China.
All of our product are meet with Reach, CE, RoSH, SGS, EN62471 standards.
You can see some weak red bright when the 850Nm IR LED is working, But you can see nothing when the 940nm IR LED is working. Unless you watch it through some device(like phone's camera), which will show some purple or white color light.
IR LED widely used for those "night-vision" cameras, IP camera, remote controls, Touch screen, intelligent monitoring, webcam, hunting camera, CCTV cameras, surveillance cameras and security system. For instance, 940mn Through-hole IR LED did a great job in night-vision. 850mn SMD IR LED did a great job in infrared touch screen.
We use the best raw material, like Taiwan's Epistar chip, Tyntek chip, optocech chip and 99.99% gold wire for your best prouct, which is make our product have a fabulous performance. Looking forward to cooperate with you.