Thermocable F2991 Leader Cable with low smoke zero halogen cable coating for indoor and outdoor use. The cable coating is UV stable and oil resistant and is protected by a stainless steel braid for an increased mechanical strength. The F2991 Leader Cable is used as a lead cable to create an insensitive detection zone when the linear heat detection cable is away from the control unit. Usable in both analog linear heat detection and digital linear heat detection. The maximum applicable length in analog linear heat detection : 250m and in digital linear heat detection : 1000m. Roll of 100 meters