Coleman Cable 816020504 FPLP Unshielded Fire Alarm Cable, Red, 16/2, 500-Foot 500-Feet spool of wire FPLP Unshielded Fire Alarm Cable, Red, AWG size: 16/2 For Fire alarm, smoke detectors, signaling, fire protective circuit installation wiring Power limited fire alarm and communications cable for plenum applications For fire alarm, smoke detectors, signaling, fire protective circuit installation wiring