Night Optics IR-K3 Extra Long-Range IR Illuminator, 805NM, 350mW

The IR-K3 IR Illuminator features a fixed beam, simple on/off controls and versatile mounting capabilities.

Because the performance of any night vision or low-light CCD device is dependent on ambient light, magnification, atmospheric transparency, and contrast between the target and its background, addition of the right IR Illuminator can significantly enhance visual acuity and extend detection ranges.

The IR-K3 mounts easily to night vision or CCD devices or can be hand-held. Ideal aid for extreme low light conditions. Significantly extends capabilities of weapon sights, observation devices and photographic equipment.

Capabilities of IR Illuminators are a function of ambient conditions, power and wavelength. Effective range is a function of power and wavelength. Higher power and shorter wavelengths result in longer ranges.

Additionally, IR sources above 940nm are virtually invisible to the naked eye, while shorter-wavelength sources emit a visible, point-of-origin signature what viewed from the front.


  • (1) IR-K3 device
  • (1) 3v CR123 Battery


  • Night Optics Part #: IR-K3
  • Type: Eye Safe Diode
  • Power: 350 mW Fixed
  • Peak Wavelength: 805 nm
  • Beam Angle: 6°
  • Batter Type/Life: 3v CR123/50 Hours
  • Mount: 1/4"-20 screw
  • Temperature Range: 4°F - 113°F (16°C - 45°C)
  • Dimensions: 6.4" x 1.4" x 1.3" (163mm x 36mm x 34mm)
  • Weight: 5.9 oz
  • Warranty: 1 Year

FREE standard shipping for online orders with with an order total of $99 or higher.
$6.95 standard shipping for online orders with an order total of $98.99 or below. Qualifying amount applies to merchandise only. Subject to change without notice. Offer valid for standard shipping within the contiguous United States (some restrictions apply such as shipping to Canada, Alaska, Hawaii, and all other destinations outside the continental United States including APO and FPO addresses are not eligible for this promotion and may incur additional charges). Additional fees apply to haz-mat/chemicals/ aerosols, over sized or unusually heavy items/orders,including but not limited to ladders, fire hose, pepper spray, fire extinguishers, full-size light bars and spike strips. Some vendors are also excluded, view a list of excluded brands here.

Shipping rates apply to all products. Some orders may require additional shipping charges.

Standard Shipping Charges

Charges for addresses in the contiguous United States only.
Order Total Standard 2-Day Air** Next Day Delivery
Up to $25 $8.49 $6.95 $28.48 $33.48
$25.01 to $50.00 $10.49 $6.95 $30.48 $35.48
$50.01 to $98.99 $12.49 $6.95 $32.48 $37.48
$99.00 to $150.00 $14.49 $0 $34.48 $39.48
$150.01 to $200 $16.49 $0 $36.48 $41.48
$200.01 to $250.00 $18.49 $0 $38.48 $43.48
$250.01 to $300.00 $20.49 $0 $40.48 $45.48
$300.01 to $350.00 $23.49 $0 $43.48 $48.48
$350.01 to $400.00 $25.49 $0 $45.48 $50.48
$400.01 to $500.00 $27.49 $0 $47.48 $52.48
$500.01 to $750.00 $31.49 $0 $51.48 $56.48
$750.01 to $1,000 $34.49 $0 $54.48 $59.48
$1,000.01 and over $38.49 $0 Contact us for a quote

Night Optics IR-K3 Extra Long-Range IR Illuminator, 805NM, 350mW

Item #: IRK3
More on the way! Item will be available to ship within 7-10 business days

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Night Optics Night Optics USA, Inc. is widely recognized as an innovative industry leader and provider of professional quality night vision products and Thermal technologies for commercial, law enforcement and military. From night vision monoculars and binoculars to thermal riflescopes, Night Optics’ continuously evolving product line incorporates the latest technological developments and end-user input. Shop CHIEF Supply for your night vision needs from the vast selection of products from Night Optic.
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