... shielded twisted pair fire alarm cable, Fire resistant cable for fire resist and fire detection,low voltage circuit 16awg, 18awg shielded twisted pair fire alarm cable, Fire resistant cableCable Introduction:Fire Resistant/Alarm Cable used for burglar alarms fire ... sheath .Specification :Conductor: 1.0 sqmm,1.50sqmm,2.5sqmm 4.0sqmm, solid or stranded bare copperInsulation: Silicon MaterialShield ...