Image shows a Spectrum Illumination


2" x 4" Red LED Backlight with 12" cable

Spectrum Illumination

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2" x 4" red backlight
12 LEDs per square inch
Includes 12" cable without connector
3 year limited warranty

This is a quality 2" x 4" backlight manufactured by Spectrum Illumination. It is typically used to image objects in silhouette for measurement applications and feature presence detection. It can also be used as a low-intensity diffuse front light.

The light includes a white diffuser as standard. It may be operated in continuous or strobe mode. If used in continuous mode, the light should be mounted against a metal structure to provide additional heat dissipation.

Please contact us if you're interested in a different diffuser material or a custom size light.


Type: Backlight
Wavelength: 660 nm (Red)
Window: White Diffuser Optional diffusers: Clear cover, thin film diffuser, or linear polarizer.
Window Width: 102 mm (4.0")
Window Height: 51 mm (2.0")
Power: 200 mA max @ 24 VDC
Strobe: +5 to +24 VDC enables light
Cable Length: .3 m (1.0 ft) See LTSN118 for same light with standard cable.