18/2 Riser Security Alarm Cable - CMR/CL3R Rated, 7 Strand Copper, 1000ft Gray

18/2 Riser Security Alarm Cable - CMR/CL3R Rated

Heavy-duty unshielded riser-rated 2-conductor security alarm cable engineered for long-run installations in clean electrical environments. This USA-made cable features two 18-gauge stranded bare copper conductors with 7 strands each, housed in a CMR-rated gray jacket. Delivering the longest possible cable runs without the premium cost of shielding, this cable is the optimal choice for professional installations requiring heavy-duty 18 AWG performance in environments where EMI protection is not required.

Key Features

• 18 AWG 2-Conductor Design - Heavy-duty wire gauge for maximum cable run lengths
• 7-Strand Bare Copper Conductors - Excellent flexibility and reliable signal transmission
• CMR/CL3R Riser Rated - Approved for vertical shaft and in-wall installations
• Unshielded Design - Cost-effective solution for clean electrical environments
• 2 Color-Coded Conductors - Easy identification (Black and Red)
• Sequential Footage Marking - Precise measurement for accurate installation planning
• ETL Listed & RoHS Compliant - Meets strict safety and environmental standards
• Gray PVC Jacket - Professional appearance for visible installations
• Print Legend for Identification - Cable markings save valuable installation time
• Made in USA - Premium domestic manufacturing quality

Ideal Applications

Perfect for long-run riser installations in residential and commercial buildings:

• Single-Zone Security & Alarm Systems
• Long-Run Commercial Security Installations
• Multi-Story Building Vertical Runs
• Residential Security Systems
• Intercom Systems
• Audio Distribution Systems
• Power-Limited Control Circuits

Technical Specifications

• Conductor Material: Stranded Bare Copper
• Wire Gauge: 18 AWG
• Number of Conductors: 2
• Strands per Conductor: 7
• Conductor Insulation: 0.254mm PVC
• Cable Diameter (Nominal OD): 4.09mm (0.161")
• Jacket Thickness: 0.38mm (0.015")
• Jacket Material: PVC
• Jacket Color: Gray
• Shielding: Unshielded

Electrical Performance

• Maximum Temperature: 75°C (167°F)
• Voltage Rating: 300V

Certifications & Compliance

• Riser Rating: CMR (Communications Riser)

• Additional Ratings: CL3R, FPLR

• Listings: ETL Listed

• Environmental: RoHS Compliant

• NEC Article Compliance:

  • Articles 760 (FPLR - Fire Alarm)
  • Article 800 (CMR - Communications)
  • Articles 725 (CL3R, CL2R - Control Circuits)

Conductor Color Coding

• Conductor 1: Black
• Conductor 2: Red

Jacket Printing

18 AWG 2C UNSHIELDED TYPE CL3R/FPLR c(ETL)us TYPE CMR 3054355

Package Details

• Length: 1000 feet per spool
• Country of Origin: Made in USA

Why Choose 18/2 Riser Cable?

✓ Maximum Cable Runs - Longest distances possible (up to 3,000 feet) for unshielded cable
✓ Heavy-Duty Performance - 40% lower resistance than 22 AWG
✓ Cost-Effective - Heavy-duty performance without shielding premium
✓ Fire Code Compliant - CMR riser rating for vertical installations
✓ Professional Quality - Print legend and sequential marking
✓ Higher Current Capacity - Supports powered devices like magnetic locks
✓ Reduced Voltage Drop - Maintains system performance over long distances
✓ Versatile Use - Single cable for security, intercom, and control applications

Riser Installation Requirements

Use CMR Riser Cable When:

• Installing vertically between floors
• Running through walls and vertical shafts
• Non-plenum spaces in commercial buildings
• Multi-story residential or commercial installations
• Building codes require fire-rated cable (but not plenum)

Note: Riser (CMR) cable is suitable for most commercial and residential applications except air-handling plenum spaces. For plenum spaces, use CMP-rated cable instead.

Common Use Cases

• Multi-Story Residential Buildings: Long vertical riser runs in apartments and condos
• Commercial Office Buildings: Single-zone security with clean electrical environment
• Warehouse & Distribution: Perimeter security with long cable runs
• Retail Stores: Store security in locations with modern LED lighting
• Educational Institutions: Classroom or office security with long runs
• Religious Facilities: Church or temple security systems
• Community Centers: Recreation facility security
• Small Business: Professional offices, restaurants, small retail
• Parking Garages: Multi-level security with vertical runs
• Storage Facilities: Self-storage security with extended perimeter coverage

When to Choose This Cable

Perfect For:

• Long cable runs (2,000-3,000 feet) in clean environments
• Multi-story residential or commercial vertical riser installations
• Professional installations where heavy-duty performance is critical
• Projects requiring maximum cable length without shielding premium
• Commercial buildings with modern electrical systems (LED lighting)
• Residential security systems with extended perimeter coverage
• Budget-conscious projects needing heavy-duty performance

Consider Alternatives If:

• High EMI environment with electrical interference (choose shielded)
• Plenum spaces required (choose CMP-rated cable)
• Standard runs under 2,000 feet (20 AWG or 22 AWG may be adequate)
• Multiple zones needed (consider 18/4 or 18/6)
• Near heavy machinery or industrial equipment (shielding recommended)

Maximum Run Distance Calculator

Approximate Maximum Distances by Application (18/2):

Security/Alarm Panels:

• 12V systems: Up to 3,000 feet
• 24V systems: Up to 6,000 feet (voltage dependent)

Access Control:

• Card readers (12V): Up to 1,500 feet
• Magnetic locks (12V): Up to 1,000 feet

Intercom:

• Audio systems: Up to 2,000 feet
• Video systems: Verify manufacturer specs

Note: Always verify maximum run lengths with specific equipment manufacturer specifications. Actual distances vary based on voltage, current draw, and acceptable voltage drop.