25 Foot Length of Wavenet CC1804URGY4, GREY 4 Conductor 18 Gauge Stranded Unshielded PVC FT4 CMR Cable with a Grey Jacket. Application uses are power limited control circuits for security, audio and background music. Suitable for smoke detectors, burglar alarms, addressable fire alarm systems, and other low-voltage security or audio applications This cable has a Grey Colored Flame Resistant FR-PVC (PolyVinyl Chloride) Insulation Jacket. This Cable has 18 AWG Stranded Bare Copper Conductors and PVC (PolyVinyl Chloride) Insulation on the Individual Wires. FEATURES: Conductors 4 Conductors Stranded 18 Gauge (4C, 18AWG) Jacket: Overall PVC (PolyVinyl Chloride) Jacket Overall Nominal Diameter: 0.200 in. Shielding: Unshielded Ratings: (ETL) Listed, CMR/CMP; TIA-569-C.2 Overall Cabling Color Code Chart (Number, Color): 1 Black 2 Red 3 White 4 Green