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Internet # 204725141

Model # 57573099

Store SKU # 249865

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(By-the-Foot) 18/4 Gray Stranded CU CL3R Shielded Security Cable

Limit 200 per order
82¢
  • #18 AWG Shielded Security Cable - Sold by the Foot (continuous)
  • Add the Length Desired In Feet as Your Quantity and Add To Cart
  • Notice: This item has a min. order qty of 6ft and a max of 200ft
  • View More Details

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Product Details

About This Product

Experience exceptional versatility and reliability with the Southwire Gray 18/4 CL3R Security Wire - an ideal solution for a range of applications including fire alarms, security systems, and data communications. Engineered for excellence, this wire is well-suited for indoor or outdoor installations, making it a dependable choice for various environments. Designed to adapt, it thrives in both dry and damp settings, ensuring consistent performance wherever it's deployed. Crafted with precision, it features stranded copper conductors that ensure optimal conductivity and durability. Its primary application lies in interconnecting electrical devices within security or fire-protective signaling systems, ensuring seamless communication and functionality. Safety takes precedence with its flame-retardant PVC insulation, providing a protective barrier against potential hazards. With a maximum voltage rating of 300-Volt, this wire is equipped to handle your electrical needs with confidence. Rated to withstand temperatures up to 221°F, it delivers unwavering performance even in demanding conditions. Elevate your fire alarms, security systems, and data communication installations with the Southwire Gray 18/4 CL3R Security Wire - a versatile, dependable, and high-quality solution that ensures optimal connectivity, safety, and durability.

Highlights

Product Information

Internet # 204725141

Model # 57573099

Store SKU # 249865

Specifications

Total Wire Length (ft.): 1 ft

Dimensions

Total Wire Length (ft.)

1 ft

Details

Commercial/Residential

Commercial, Residential

Conductor Material

Copper

Features

Jacketed, Low Voltage

Gauge

18

Grounded

Grounded

Indoor/Outdoor

Indoor, Outdoor

Jacket Color

Gray

Jacket Rating

CL3R

Max Amps

Not Specified

Number of Conductors

4

Returnable

90-Day

Stranded or Solid

Stranded

Voltage (v)

300v

Wet Location Use

Dry

Wire Cut Type

Cut By-The-Foot

Warranty / Certifications

Certifications and Listings

CSA Listed, UL Listed

Manufacturer Warranty

na

Questions & Answers

Can this be used for motorize shades
ByApr 24, 2026
1 Answer | 
Answer This Question

Hello! Your inquiry is best handled by our specialized staff. Please email us at consumersupport@southwire.com, and we'll be happy to assist.

By|Apr 29, 2026


    Can I use it for window alarm
    ByMar 4, 2026
    1 Answer | 
    Answer This Question

    Thanks for reaching out to us with your question! To discuss your specific product needs, please email us at consumersupport@southwire.com. Our dedicated team looks forward to assisting you soon.

    By|Mar 6, 2026


      Can this be used for 10 to 10 volts dimmer
      ByFeb 8, 2026
      1 Answer | 
      Answer This Question

      Thanks for reaching out to us with your question! To discuss your specific product needs, please email us at consumersupport@southwire.com. Our dedicated team looks forward to assisting you soon.

      By|Feb 8, 2026


        Can this be used for 3 button garage door opener ?
        ByDec 19, 2024
        1 Answer | 
        Answer This Question

        This wire is intended for low voltage security alarm applications. Garage door openers use low voltage wiring, but require specific safety features. It is recommended to use wire specifically designed for garage door openers to ensure proper and safe operation.

        By|Oct 5, 2025


        Can this be used to connect wall mount garage control button to garage door opener ran inside the wall ? I want to replace 18/2 cl2 with this. Are they compatible?
        ByJul 23, 2024
        0 Answer | 
        Answer This Question

        is this plenum wire
        ByJul 22, 2024
        1 Answer | 
        Answer This Question

        It is Riser wire--https://www.southwire.com/search/?q=CL3R

        By|Jul 25, 2024


          Can it be used for water heater solar temperature sensor wire
          ByMay 30, 2024
          1 Answer | 
          Answer This Question

          @Henry, This cable is not appropriate for water heater solar temperature sensor wire. Consumer Support

          By|May 31, 2024


            Can I use it for a communication thermostat to ac condenser ?
            ByMar 17, 2024
            1 Answer | 
            Answer This Question

            Wire is wire as long as the gauge matches.

            By|Dec 28, 2025


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              Customer Reviews

              4.9 out of 5

              • 4.9 out of 92 reviews
              • 100% recommend this product
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              Excellent quality and performance, The wire arrived in perfect condition, works reliably, and delivers exactly what it promises. Highly recommended.
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              The wire is exactly what I needed to complete a project.
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              It was just fine it rolled right off like it should
              by
              • Verified Purchase
              wire is while made. only issue packaging need to be improve as 2 of the reels had the end of the roll broken, still was easy to roll off the stand with breake.
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              • Verified Purchase
              I bought this wire for running microphone XLR cable connections for a studio. The pure copper wire solders really well and the cable is shielded for no noise in recording music
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              Showing 1-10 of 92 reviews