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#1 Source in low voltage wire and cable. Call us today to learn more about special offers.
#1 Source in low voltage wire and cable. Call us today to learn more about special offers.

Security Alarm Cable - Plenum (CMP) - 18/12 AWG, CL3P, Stranded (7 Strand), Shielded, 1000ft, White

SKU: ASC3-3525/1812
Various lead times may apply to this product. Please contact us for more details.

Made in USA RoHS Compliant ETL Verified logo


18/12 Shielded Alarm Cable for Residential & Commercial Security Systems

Our Bulk Security Alarm Cables, or alarm wire, are custom-made to fulfill alarm system installation needs. This plenum alarm cable features twelve 18-gauge bare copper conductors with 7 strands, coupled with a low smoke CMP jacket for fire safety and aluminum mylar shielding to protect against external electromagnetic interference. Proudly crafted in the USA, this security cable is specifically designed for installation in security systems, intercom systems, power-limited controls, and sound/audio systems.

Product Quality

We stock a wide variety of high quality alarm cables to meet all your needs. Our bulk security cables come with both riser and plenum rated jacket. Be sure to check the building code requirements before purchasing alarm cable. The alarm cable also include print legends to allow for quick identification of each cable's application. Time is precious and the convenience of the cables at installation makes our security alarm cables the choice for multiple applications.


A broad range of applications exist for bulk plenum security alarm cabling. It is widely used with security systems, intercom systems, sound/audio systems, and power-limited controls in commercial settings such as schools, universities, hospitals, airports, government buildings, train and transportation centers, stadiums, and arenas. Since this security cable has multiple conductors under one jacket, the preparation, set up, and termination time is shorter.

Why Plenum?

A plenum space is the open area above the drop ceiling or below the floor that is used for air circulation in buildings. This could be a problem if there is ever a fire. Using non-plenum cables in a plenum space can spread fire and toxic smoke throughout a building. Plenum cable uses a flame-retardant jacket that is made of special plastics to prevent the release of harmful smoke. Plenum cable is mostly used in commercial applications such as schools and hospital buildings that house a large population of people. It also is required in most multi-floor business buildings with large plenum space areas.



  • 18 AWG 12 Conductors
  • Plenum Rated
  • 7 Stranded Bare Copper Conductors
  • Low Smoke PVC Insulation
  • Shielded
  • Low Smoke White PVC Jacket
  • Sequential Footage Marking
  • CL3P/FPLP Rated
  • ETL Listed
  • RoHS Compliant
  • NEC Articles
    • 22-16 AWG: FPLP/760, CMP/800, CL3P, CL2P/725
    • 14-12 AWG: FPLP, CL3P

Conductor Jacket Color

  • Black
  • Red
  • White
  • Green
  • Brown
  • Blue
  • Orange
  • Yellow
  • Purple
  • Gray
  • Pink
  • Tan

Residential or Commercial Applications

  • Security Systems
  • Intercom Systems
  • Sound/Audio Systems
  • Power-Limited Controls



Physical Construction

Inner Conductor Stranded Bare Copper
Conductor Size 18 AWG
Insulation Low Smoke PVC
Nominal OD 7.85mm
Outer Jacket Diameter .457mm
Jacket Low Smoke PVC
Jacket Color White
Number of Strands 7
Conductor Insulation .009" PVC

Electrical Characteristics

Temperature 75°C
Voltage Rating 300V

Additional Information

Standards ETL | RoHS | CMP
Applications Security Systems | Intercom Systems Sound | Audio Systems | Power-Limited Controls
Jacket Printing 18 AWG 12C SHIELDED TYPE CL3P/FPLP c(ETL)us TYPE CMP 3054355
Important Notes The information contained in this document is proprietary to CRN Solutions and may not be disclosed or transmitted to any other parties without the express written permission of CRN Solutions. This information is provided for the purposes of quotation only.

What's in the Box

What's in the Box

  • Security Alarm Cable - Plenum (CMP) - 18/12 AWG, CL3P, Stranded (7 Strand), Shielded, White
  • 1000 Ft