SYSTON 18/2 Fire Security Burglar Station Sound Alarm Control Cable

Our review of the SYSTON 18/2 control cable finds it best suited for installers and facility managers who need a reliable, plenum-rated wire for fire alarm, security, and other power-limited low-voltage systems. The single biggest reason to choose this cable is its CMP/CL3P plenum flame rating combined with stranded 100% copper conductors, which together deliver both the safety required for ceiling plenum runs and the conductivity installers expect for signal integrity. It is a practical, no-frills choice when code-compliant plenum wiring is required.

Key Features

• Plenum-rated CMP/CL3P: The high flame retardant rating allows use in ceiling and air-handling spaces where stringent fire performance is required.
• Pure stranded copper conductors: Stranded bare copper offers good flexibility and conductivity for alarms, intercoms, and communication runs.
• 300V CL3 rating: Insulation and voltage rating meet class 3 power-limited standards for thermostats, access control, and security circuits.
• Multiple application compatibility: Suitable for fire alarm, burglar alarm, public address, telephone stations, nurse call and other low-voltage circuits in commercial settings.
• Standards and listings: Constructed to comply with NEC 725 & 800 and UL 13 & 444, with UL/ETL listing and RoHS compliance for regulatory peace of mind.
• UV resistant and indoor/outdoor use: Durable jacket provides added resistance for runs that may be exposed to light or occasional outdoor conditions before entering buildings.

Who It's For

The cable is aimed at professional electricians, security integrators, and building maintenance teams who must run code-compliant plenum-rated control wiring for fire alarm, access control, and intercom systems. Anyone installing in air-handling plenums will benefit from the CMP/FT6 rating and the confidence that the cable meets NEC and UL standards.

It is less suited for homeowners who need a heavy gauge power cable or for specialty applications that demand shielded or multi-conductor jacketed assemblies beyond a simple 18/2 unshielded pair. If shielding or thicker conductors are required, installers should select a different cable optimized for those needs.

Pros & Cons

Pros

• Plenum-rated CMP construction offers the highest flame retardant protection for ceiling spaces.
• Stranded, 100% copper conductors provide reliable conductivity and easier handling for installations.
• Broad application range covers fire alarm, security, PA, intercoms, and other low-voltage systems.
• Meets NEC and UL standards and is RoHS compliant, simplifying code compliance.

Cons

• Unshielded design makes it less ideal where EMI protection is required for sensitive signal runs.
• Some users may find the 18 AWG pair thinner than expected for certain mechanical stress or long voltage drop-sensitive runs.

Specifications

Conductor	Stranded bare 100% copper
Pairs	18/2
Voltage Rating	300V (CL3)
Plenum Rating	CMP / CL3P / FT6
Standards	NEC 725 & 800, UL 13 & UL 444, NFPA 262
Listings	UL and/or ETL listed, RoHS compliant

Our Verdict

The SYSTON 18/2 plenum-rated control cable is a solid choice for professionals who need a code-compliant, flexible 18 AWG control pair for fire alarm, security, and communication systems. Its combination of CMP flame performance and stranded copper conductors makes it good value for installations in ceiling plenums, though those needing shielding or heavier gauge conductors should consider alternatives.

Frequently Asked Questions

Can this cable be run in plenum spaces?
Yes, it is CMP/CL3P/FT6 plenum-rated specifically for use in air-handling spaces such as ceilings and enclosures.

Is this cable shielded for EMI protection?
No, this 18/2 version is unshielded; choose a shielded cable if electromagnetic interference protection is needed.

Is it suitable for outdoor use?
The jacket is UV resistant and can handle temporary outdoor exposure before entering a building, but it is designed primarily for indoor low-voltage applications.