SYSTON 18 AWG 8-Conductor Plenum Shielded Control Cable - CMP

In this review of the SYSTON 18 AWG 8-conductor control cable, the bottom line is straightforward: this cable is aimed at installers and technicians who need a plenum-rated, shielded low-voltage cable for fire alarm, security and communications runs. The single biggest reason to buy is its combination of stranded pure copper conductors and aluminum foil shielding inside a CMP/CL3P jacket, which preserves signal integrity in air-handling spaces while meeting Class 3 power-limited requirements. It is a practical choice when safety and EMI resistance matter in commercial or residential low-voltage systems.

Key Features

• Plenum Rated CMP/CL3P: The flame retardant CMP jacket allows safe installation in ceiling plenums and air distribution spaces where higher fire performance is required.
• 18 AWG 8 Conductors: Eight individually insulated stranded copper conductors provide flexibility for multi-circuit control and easier termination in panels and terminals.
• 100% Copper Stranded: Bare copper strands improve conductivity and reliability for low-voltage fire, security and communication circuits.
• Aluminum Foil Shielding: The foil shield reduces electromagnetic interference and helps keep signal transmission clean in environments with nearby electrical noise.
• 300V CL3 Rated: The 300V insulation rating supports Class 3 power-limited applications such as thermostats, access control and audio systems with a good safety margin.
• UV Resistant and RoHS Compliant: Materials resist UV exposure for certain exposed runs and comply with RoHS for restricted substances.

Who It's For

This cable suits electrical contractors, security system installers and facilities managers who regularly wire fire alarm panels, burglar alarms, nurse call and public address systems in buildings that require plenum-rated materials. It works well where multiple low-voltage circuits must run together and where shielding is needed to prevent interference from nearby equipment.

It is less appropriate for heavy-power wiring or where thicker gauge conductors are required for long-distance power delivery; homeowners doing light DIY lighting that does not traverse plenum spaces may prefer simpler, non-plenum cable for cost reasons.

Pros & Cons

Pros

• High flame-retardant CMP jacket suitable for plenum installations and improved safety.
• Full stranded copper conductors deliver good conductivity and flexibility for routing and termination.
• Aluminum foil shield provides effective EMI protection for sensitive communication signals.
• Works across many low-voltage applications, from fire alarms to intercoms and access control.

Cons

• Some customers note the conductor bundle feels thin for certain mechanical needs, so it may not meet expectations where a stiffer, thicker cable is preferred.
• Plenum-rated cable can be pricier than standard non-plenum alternatives for non-air-handling installs.

Specifications

Conductor Material	Stranded bare copper
Gauge	18 AWG
Number of Conductors	8
Shielding	Aluminum foil
Fire Rating	CMP / CL3P / FT6 (Plenum)
Voltage Rating	300V (CL3)
Compliance	RoHS, UV resistant

Our Verdict

The SYSTON 18 AWG 8-conductor plenum shielded control cable is a sensible pick for professionals who need reliable signal performance and the safety of a CMP jacket in air-handling spaces. Its stranded copper and foil shielding make it versatile across fire alarm, security and communications systems, offering good value when plenum rating and EMI protection are required.

Frequently Asked Questions

Is this cable suitable for plenum ceiling runs?
Yes. The cable carries a CMP/CL3P/FT6 plenum rating and is designed for installation in air-handling plenums and ceiling spaces.

Can it be used for both alarm and access control wiring?
Yes. The 8 conductors and CL3 300V rating make it appropriate for fire alarm, burglar alarm, access control and other power-limited low-voltage circuits.

Does the shielding prevent interference from nearby equipment?
Yes. The aluminum foil shield reduces electromagnetic interference and helps maintain clear signal transmission in noisy environments.