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IIRS - Internally Illuminated Regulatory Sign

The IIRS Series provides maximum legibility in various sizes of regulatory signs.

Available as single or double faced. The IIRS Series may be mounted on most existing structures such as posts, overhead mast arms, overhead cables, etc.

Special leveling free-swinging type brackets that reduce wind loads are provide for mast arm mountings.


  • Single or Double Face
  • Windload Dump Feature
  • Increased Legibility
  • Minimum Maintenance
  • Suitable for outdoor use
  • Daytime visibility without being illuminated

IIRS - Internally Illuminated Regulatory Sign

Main body
The IIRS is constructed from .064 extruded 6063-T5 aluminum extrusion. The body extrusion is mitered and seam welded. Standard natural aluminum finish though may also be specially ordered in a powder coat finish. Fixture supplied with screened drain holes to eliminate buildup of condensation yet provide protection from insects.
Lens assembly
The lens is a removable frame assembly with integral hinge that mates with the sign body. The frame rail is constructed from 6063-T5 extruded aluminum. The extruded rail completely frames the .118 translucent white UV stabilized polycarbonate.
Each sign is supplied with one, two, three, or four T8 or T12 cool white fluorescent lamps or LED Light Engine. Quantity and length of lamps is dependent on fixture size and legend requirements.
LED Driver is 24v output, universal input 120/277 VAC
The unique extrusion has a universal mounting channel for different bracket attachments. The sign can be mounted free swinging, spanwire, or rigidly mounted to a pole or mast arm.
Dimensions Lamps
24x24 2
24x30 2
30x30 3
30x36 3
36x36 3
36x48 4
48 4
Product ID model Voltage Face
IIRS 120 (std.) S- Single Face
D- Double Face
Options Finish and color Mounting
PEC-Photo electric cell
PCR- Photo cell recepticle only
RR- Reflective Film
OV- Overlay Film
NA- Natural aluminum (Std.)
CC- Custom (please specify)
MST- Mast arm (Std.)
SWC- Span wire cable
BUP- Back brace to fit upright pole;
DMS- Direct arm mount (single face only)

National Signal Inc.
2440 Artesia Avenue
Fullerton, CA 92833

(888) 994-0300
(714) 441-7707


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All Rights Reserved.
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