Fire alarm 18/2 bare copper 18awg 2 conductor unshielded cable - 1000 feet, red this product features a shielded 100% bare copper 18/2 shielded fire alarm cable.The fire alarm cable is composed of 2/18 gauge wires shielded with an aluminum mylar layer inside of a fplr rated outer jacket.The primary use for this cable is for power limited fire circuits, but can also be used in wiring security systems(fplr/cl2r/cmr c(ul)us cmg ft4).Power limited circuit cable communications cable.Cable conductor material: 100% bare copper cable gauge: 18awg cable length: 1000 feet