I’ve been messing around with IR LED strips for my security cameras and only recently realized that 850nm and 940nm aren’t really the same. I kind of assumed any infrared light would work, but the results look different in real use.
850nm seems brighter at night, but you can spot a faint red glow if you look closely. 940nm is totally invisible, which is nice, but the image can look a bit darker depending on the camera.
For anyone who’s tried both, which one did you stick with? Did switching make a noticeable difference for you?
This is something many users only realize after some hands-on testing — both the wavelength (850nm vs 940nm) and the LED type (2835 vs 5050) affect real-world results.
From actual use cases:
• 850nm IR is generally brighter and works better with most security cameras. It’s the safer choice when image clarity and monitoring range matter, even though there’s a faint red glow visible up close.
• 940nm IR is completely invisible to the human eye and is often used when discretion is important. The trade-off is slightly lower brightness, and results depend more on the camera’s IR sensitivity.
When it comes to LED type:
• 2835 IR strips focus on stability and even illumination. They run cooler and are ideal for close-range or long-hour monitoring, especially indoors.
• 5050 IR strips deliver higher output and wider coverage, making them better suited for outdoor areas or larger spaces, but they require better power management.
In practice, many setups mix these factors. For example, 850nm + 2835 works well for steady indoor monitoring, while 850nm or 940nm + 5050 is often chosen when extra brightness or coverage is needed. Once installed, the differences are easy to notice on camera.