Visit our New DuncansOnline
Store Site

Visit our New DuncansOnline Store Site

Call Us Toll Free at 1-888-445-8375 To Order 
PayPal/All Credit Cards Accepted

Visit our New

Store Site

Live Chat Page

Visit our YouTube Site

Visit our YouTube Site

Home Page

Sales & Support

     Lens Compare
     Remote Access
     ActiveX Controls
     Make Screen Shots
     IP/Analog Scrn Shts
     PICO/Blue Iris/DVR
     Shipping from China
Store Pages
Shipping Times

   eBay Change
   Contact Us


      Nov 15, 2011

      Dec 15, 2011
      Jan 25, 2012
      Feb 16, 2012
      Mar 19, 2012
      May 17, 2012
      Nov 20, 2012
      Spt 1, 2013

To Order
Call Us Toll Free

We will Phone You
On Our Dime!
At Your Time!
Click Here
to Request
Call Back

International Visitors

Visit our New DuncansOnline
Store Site



What is infrared?

Infrared is a technology to add light to an area that is invisible to the naked eye that a camera can see.

This is done via infrared leds (light emitting diodes). We have a wide variety of infrared cameras that can see in very dark areas.

Can the human eye see the infrared leds?

Yes and no.

Some infrared leds are invisible and some leds emit a slight red glow. If the leds are invisible to the naked eye, it will be stated in the product's description as invisible leds.


Are infrared leds invisible? Will someone see them at night?

No. Almost but not 100% invisible. Most pedestrians and passerbys will never know you have infrared led surveillance cameras.

We offer a 940nm led in our 56 and 104 led cameras. These 940nm leds are virtually invisible. They are only offered in two cameras.

The 850nm leds are much more common and actually put out more light per led than the 940nm. This is what is in the vast majority of our infrared cameras.

The 850nm leds put out a slight reddish or pinkish glow if you stare right straight into the camera in the dark. You won't see the leds at a glance, you have to look for the glow.


What's the difference between 850nm and 940nm infrared LEDs?

940nm infrared LEDs are virtually invisible to the naked eye. These LEDs produce no light that the naked human eye can see. The light from these LEDs can, however, be picked up by infrared cameras. These cameras may vary between 930 and 950nm.

The 850nm infrared LEDs have a very slight reddish glow to the LEDs themselves. The fact that they do have a very small amount of light that the human eye can see means they will illuminate better. A 850nm LED will illuminate two to three more than a 940nm LED. Operating voltage, amperage and manufacture also play vital roles in the brightness of and LED. This is how our 48LED and 28LED (850nm) cameras can illuminate as well or better than our 104LED (940nm) camera.

If a camera has 940nm infrared LEDs it will be labelled as such in the description.