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CMP Plenum Rated 18/4 Security Cable – CL2 Unshielded, Stranded Bare Copper Conductor, 500ft
0 out of 5
$169.99 Original price was: $169.99.$154.99Current price is: $154.99.

CMP Plenum Rated 18/4 Security Cable – CL2 Unshielded, Stranded Bare Copper Conductor, 500ft
$169.99 Original price was: $169.99.$154.99Current price is: $154.99.
In stock
SKU: 52N-SC-18/4
Categories: 18/4, Speaker/Security
Tags: 18/4 Security Cable, 500ft, Bare Copper, CL2 CMP Plenum
- Description
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Description
18/4 CMP Security Cable – Plenum Stranded 500ft
The 18/4 CMP security cable is engineered for professional access control and security systems in fire-rated plenum spaces where UL-listed CMP certification and code compliance are mandatory. With 4 independent stranded copper conductors, professional-grade construction, and 500ft bulk spool, this CMP security cable delivers reliable multi-circuit signaling while meeting stringent fire-safety codes for above-ceiling and return-air plenum installations in commercial facilities.
Whether you’re deploying access control networks across multi-floor buildings, retrofitting security systems in existing structures, integrating door strike and sensor circuits in plenum-constrained spaces, or designing new security infrastructure, 18/4 CMP security cable ensures your installation passes every code inspection while maintaining signal integrity. The stranded 4-conductor design of this CMP security cable eliminates complex wiring schemes and enables simultaneous transmission of power, control, sensing, and return circuits in a single professional-grade run.
Key Features & Benefits
- CMP Plenum-Rated Fire-Safety Certification – This 18/4 CMP security cable is UL-listed for installation in plenum spaces (above drop ceilings, return-air areas). NFPA 262 fire-safety compliant with minimal smoke and toxic gas emissions. CMP security cable meets all building codes (NEC, IBC) without requiring expensive conduit protection.
- 4-Conductor Multi-Circuit Architecture – 18/4 CMP security cable features four independent conductors enabling simultaneous power transmission, control signals, sensor circuits, and return paths in one cable. This CMP security cable design simplifies access control wiring and reduces installation complexity and labor costs.
- Stranded Copper for Professional Installation – 18/4 CMP security cable uses 16-strand per conductor construction for superior flexibility. Routes easily through tight plenum spaces, around structural obstacles, and existing cable pathways. The stranded design of this CMP security cable provides professional-grade reliability.
- Professional-Grade Plenum Construction – Fire-rated polyethylene insulation and plenum PVC jacket engineered for continuous 40–90°F operation. 18/4 CMP security cable delivers superior durability and long-term performance in plenum environments without degradation.
- Reliable Multi-Zone Security Signaling – CMP security cable is engineered for door contacts, access control readers, electric strikes, sensor circuits, and lock control wiring. This 18/4 CMP security cable maintains signal integrity across distributed security devices without noise-induced false triggers.
- Installation Labor and Material Savings – The 4-conductor design of 18/4 CMP security cable enables simultaneous power and control routing. A single CMP security cable run replaces multiple 2-conductor cables, reducing deployment time and material costs significantly.
- Code Inspector Approved – CMP and UL-listed certification on 18/4 CMP security cable immediately satisfies building officials and electrical inspectors. Your security installation passes inspection without compromise or rework requirements.
- Bulk 500ft Spool for Commercial Projects – 18/4 CMP security cable provides comprehensive coverage for medium-to-large security installations. Professional spool packaging enables efficient on-site management and economical per-foot pricing.
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | 18/4 CMP Security Cable, Plenum-Rated, Stranded Copper |
| AWG Rating | 18 American Wire Gauge |
| Conductor Count | 4 independent conductors |
| Conductor Material | Bare stranded copper (professional-grade) |
| Strand Configuration | 16 strands per conductor for flexibility |
| Insulation Material | Fire-rated polyethylene (plenum-grade) |
| Jacket Material | CMP-rated PVC compound (fire-resistant) |
| Jacket Color | Red (industry-standard for security) |
| UL/Safety Rating | UL-Listed CMP Plenum Cable |
| Fire Performance | NFPA 262 compliant (low smoke/low toxicity) |
| NEC Compliance | Article 725 (Power-Limited Circuits) |
| Operating Temperature | 40°F to 90°F (plenum-safe environment) |
| Impedance | 50–75Ω per conductor pair |
| Velocity of Propagation | 66% nominal |
| Outer Diameter | 0.28″ (7.1mm) |
| Jacket Thickness | 0.020″–0.030″ |
| Tensile Strength | 50–60 lbs per conductor pair |
| Minimum Bend Radius | 1.5–2.0 inches (stranded flexibility) |
| Total Length | 500 feet (152 meters) |
| Spool Weight | Approx. 25–28 lbs |
| IBC/NEC Compliance | Full commercial building code compliance |
Security System Applications
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The 18/4 CMP security cable is the professional specification for:
- Access Control Systems – Card reader circuits, door strike power, request-to-exit signaling, and control logic integrated in 18/4 CMP security cable single runs.
- Door Lock Integration – Electric strike circuits, magnetic lock control, and door sensor feedback with CMP security cable in plenum-constrained installations.
- Distributed Sensor Networks – Door contacts, motion detectors, and security sensor circuits with integrated power and control using 18/4 CMP security cable.
- Security Panel Integration – Circuits between access control panels, reader interfaces, and lock control modules via CMP security cable for reliable signaling.
- Intercom & Communication Systems – Access control communication circuits and audio signaling in facility security systems using 18/4 CMP security cable.
- CCTV Auxiliary Circuits – Camera control, pan/tilt/zoom circuits, and alarm relay signaling for video surveillance with CMP security cable.
- Multi-Zone Security Networks – Large facilities requiring distributed access control and security circuits in plenum spaces with 18/4 CMP security cable.
- Integrated Building Security – Multi-system integration combining access control, alarms, and surveillance using CMP security cable for plenum routing.
Why professionals specify 18/4 CMP security cable:
- Four independent conductors eliminate multiple cable runs
- Stranded construction enables flexible routing through tight spaces
- CMP plenum rating provides absolute code compliance
- Professional-grade reliability for mission-critical security systems
- Significant installation labor and material cost reduction
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Multi-Circuit Security Architecture Benefits
The Advantage of 4-Conductor Design: Professional access control systems require simultaneous transmission of strike power, control signals, sensor feedback, and return circuits. 18/4 CMP security cable accomplishes this in a single run, eliminating the complexity and cost of multiple 2-conductor cables.
Flexible Stranded Construction Excellence: Unlike solid-conductor cables, stranded 18/4 CMP security cable routes easily through tight plenum spaces, around structural obstacles, and through existing cable pathways. Professional installers appreciate the flexibility and ease of deployment with this CMP security cable.
Plenum-Compliant Security Infrastructure: CMP fire-rating on 18/4 CMP security cable eliminates expensive conduit requirements and code approval delays. Building inspectors recognize plenum certification immediately—your security installation with CMP security cable passes without compromise.
Scalable Multi-Site Deployment: The 500ft spool of 18/4 CMP security cable covers multiple security zones and access control loops across medium-to-large commercial facilities. Ideal for office buildings, healthcare facilities, and enterprise campuses requiring CMP security cable installations.
Quality Assurance & Professional Reliability
Every 18/4 CMP security cable spool is manufactured to security industry standards and undergoes comprehensive quality verification:
- UL Plenum Certification Testing – Verification of CMP rating and fire performance compliance for 18/4 CMP security cable
- 100% Conductor Continuity Testing – End-to-end verification of all 4 conductors across full 500ft length of CMP security cable
- Insulation Resistance Measurement – High-voltage testing confirms jacket integrity on 18/4 CMP security cable
- Fire Performance Validation – Batch testing verifies NFPA 262 compliance for CMP security cable
- Mechanical Strength Inspection – Tensile strength and bend-radius testing ensures installation durability of 18/4 CMP security cable
- Impedance Verification – Testing confirms 50–75Ω impedance per conductor pair for CMP security cable
Security Professional Confidence: 18/4 CMP security cable is specified by leading security integrators, access control specialists, and building security professionals designing enterprise-grade security infrastructure. When professionals need reliable CMP security cable for complex access control systems, this is the trusted standard.
Why Choose 18/4 CMP Security Cable?
- Multi-Circuit Efficiency – Four independent conductors eliminate separate cable runs
- Flexible Installation – Stranded construction enables tight routing in plenum spaces
- Code Compliance – CMP/UL-listed certification satisfies every building code requirement
- Installation Labor Savings – Simplified routing reduces deployment time and cost
- Professional-Grade Assurance – Specified by security integrators nationwide
Frequently Asked Questions
Q: When would I use 18/4 vs. 18/2 security cable?
A: Use 18/2 for simple door contact circuits (power + return). Use 18/4 CMP security cable for access control systems requiring simultaneous strike power, control signals, sensor feedback, and return in a single cable.
Q: What’s the difference between CMP and FPLP plenum cable?
A: CMP is communications/security plenum (access control, audio, data). FPLP is fire alarm plenum (life-safety fire detection). 18/4 CMP security cable is for access control; use FPLP for fire alarms.
Q: Can I use 18/4 CMP security cable in in-wall applications?
A: No. CMP plenum rating on 18/4 CMP security cable is specifically for above-ceiling and return-air spaces. For in-wall security cable, specify CMR (riser-rated) or CM cable with proper jacket.
Q: What’s the maximum circuit length for 18/4 CMP security cable?
A: Security circuits using 18/4 CMP security cable reliably handle distances up to 500+ feet depending on your access control panel specifications. Check your equipment manual for maximum circuit length.
Q: How do I terminate the 4 stranded conductors on 18/4 CMP security cable?
A: Stranded copper on 18/4 CMP security cable accepts screw terminals, barrier strips, and connectors. Most access control devices use standard terminal blocks. Insert conductors and tighten securely.
Q: Can I use 18/4 CMP security cable for both power and signal circuits?
A: Yes. 18/4 CMP security cable accommodates simultaneous power distribution (strike circuits) and signal transmission (control, sensor feedback). Verify your access control system supports this configuration.
Q: Is 18/4 CMP security cable more expensive than 18/2?
A: Yes, but 18/4 CMP security cable eliminates the need for separate power and control cable runs. For access control systems, this CMP security cable reduces total installation cost by minimizing cable runs and labor.
Q: What building codes require CMP plenum cable like 18/4?
A: NEC Article 725 (Power-Limited Circuits), IBC (International Building Code), and local codes mandate plenum-rated CMP security cable for above-ceiling security installation. Check your local AHJ.
Q: Can I splice 18/4 CMP security cable?
A: Splicing 18/4 CMP security cable should be avoided to prevent signal integrity issues. Continuous runs are preferred. If splicing is necessary, use fire-rated connectors and conduct thorough testing.
Q: Is 18/4 CMP security cable available in other conductor counts?
A: Yes. We stock 18/2, 18/4, and 18/6 CMP security cable options. Contact sales for alternative configurations and availability.
Q: What’s your warranty and return policy on 18/4 CMP security cable?
A: Full 30-day money-back guarantee on unused, factory-sealed spools of 18/4 CMP security cable. All cable carries a 1-year manufacturer’s defect warranty covering conductor integrity, fire-rating compliance, and performance specifications.
External Resources & Security Standards
For comprehensive security system design and installation standards, consult ASIS International Security Standards and BICSI Telecommunications Cabling Guidelines.
Review UL Plenum Cable Standards and Certification and NFPA 262 Smoke and Toxic Gas Release Standards for plenum material compliance verification.
Building code compliance should reference the National Electrical Code (NEC) Article 725 for power-limited circuits and International Building Code (IBC) Plenum Requirements.
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Ready to Deploy Professional Security Infrastructure?
Order your 18/4 CMP security cable 500ft bulk spool today and simplify your access control installation while ensuring code compliance. With 4 independent stranded conductors, plenum fire-rating, UL-listed certification, and 500ft coverage, you’re investing in professional-grade security infrastructure reliability.
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