Kidde Alarmline II AD68 Digital LHD Cable

Code: AD68
  • 68 deg C
  • Digital Cable
  • Various lengths

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Kidde Alarmline II AD68 is a range of Digital Linear Heat Detection (LHD) cable with a 68°C (155°F) fixed temperature activation rating, by UTC Fire & Security. Available with PVC, Nylon, Polypropylene or Stainless Steel over PVC outer sheath. Supplied in rolls of 100, 500 or 1000 metres.

  • PVC outer sheath cable is suitable for internal applications only, cUL/UL 521 approved, and FM approved (Class 3210).
  • Nylon outer sheath cable has UV protection and increased durability for external applications, cUL/UL 521 approved.
  • Polypropylene outer sheath cable has increased chemical protection in caustic environments.
  • Stainless steel over PVC outer sheath cable is designed for increased mechanical protection.

Alarmline II Digital Cables are non-resettable line type heat detectors, a temperature sensor in the form of a continuous cable. The insulation softens when the alarm temperature is reached, causing the two twisted conductors to short circuit.

The advantage of the digital cable is being able to pinpoint the increase in temperature or fire, exactly along a cable up to 3000m in length using the optional Digital Location Control unit.

Digital sensor cables can be connected to almost any monitored circuit which is capable of monitoring a switched status from open to closed, i.e. Conventional detection zone, Zone Monitor Unit etc. Digital cables are non-resettable as the section subjected to the increase in temperature will be destroyed, damaged parts of cable can easily be replaced by cutting and splicing in new segments of cable.

  • Up to 3000m (10,000ft per zone)
  • Detection along the total cable length
  • Optional extrusions for different environments
  • Suitable for use in hazardous areas
  • RoHS Compliant
  • Simple maintenance-free installation

Order Information

AD68-0100Digital cable 68 Deg C, PVC – 100m (PVC outer sheath)
PVC coated outer sheath suitable for indoor use only.
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour red,  Cable diameter 3.6mm +/- 0.12mm
100m reel on a plastic bobbin, Dimensions (mm): 300 Dia x 100d, weight: 2Kg
AD68-0500Digital cable 68 Deg C, PVC – 500m (PVC outer sheath)
PVC coated outer sheath suitable for indoor use only.
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour red,  Cable diameter 3.6mm +/- 0.12mm
500m reel on a wooden bobbin, Dimensions (mm): 430 Dia x 140d, Weight: 10Kg
AD68-1000Digital cable 68 Deg C, PVC – 1000m (PVC outer sheath)
PVC coated outer sheath suitable for indoor use only.
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour red,  Cable diameter 3.6mm +/- 0.12mm
1000m reel on a wooden bobbin, Dimensions (mm): 430 Dia x 140d, Weight: 20Kg
AD68N-0100Digital cable 68 Deg C, Nylon – 100m (Nylon outer sheath)
Nylon outer sheath provides UV protection for outdoor applications as well as protection against certain chemicals (see manual)
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour black,  Cable diameter 4.44mm +/- 0.12mm
100m reel on a plastic bobbin, Dimensions (mm): 300 Dia x 100d, weight: 2.52Kg
AD68N-0500Digital cable 68 Deg C, Nylon  – 500m (Nylon outer sheath)
Nylon outer sheath provides UV protection for outdoor applications as well as protection against certain chemicals (see manual)
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour black,  Cable diameter 4.44mm +/- 0.12mm
500m reel on a wooden bobbin, Dimensions (mm): 430 Dia x 140d, Weight: 12.6Kg
AD68N-1000Digital cable 68 Deg C, Nylon – 1000m (Nylon outer sheath)
Nylon outer sheath provides UV protection for outdoor applications as well as protection against certain chemicals (see manual)
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour black,  Cable diameter 4.44mm +/- 0.12mm
1000m reel on a wooden bobbin, Dimensions (mm): 430 Dia x 140d, Weight: 25.2Kg
AD68P-0100Digital cable 68 Deg C, Poly – 100m (PVC coated cable with Polypropylene outer sheath)
PVC cable with a Polypropylene outer sheath provides additional chemical protection against more caustic chemicals  (see manual),
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour Red with clear colour polypropylene outer sheath,  Cable diameter 4.5mm +/- 0.12mm
100m reel on a plastic bobbin, Dimensions (mm): 300 Dia x 100d, weight: 2.72Kg
AD68P-0500Digital cable 68 Deg C, Poly – 500m (PVC coated cable with Polypropylene outer sheath)
PVC cable with a Polypropylene outer sheath provides additional chemical protection against more caustic chemicals  (see manual),
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour Red with clear colour polypropylene outer sheath,  Cable diameter 4.5mm +/- 0.12mm
500m reel on a wooden bobbin, Dimensions (mm): 430 Dia x 140d, Weight: 13.6Kg
AD68P-1000Digital cable 68 Deg C, Poly – 1000m (PVC coated cable with Polypropylene outer sheath)
PVC cable with a Polypropylene outer sheath provides additional chemical protection against more caustic chemicals  (see manual),
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour Red with clear colour polypropylene outer sheath,  Cable diameter 4.5mm +/- 0.12mm
1000m reel on a wooden bobbin, Dimensions (mm): 430 Dia x 140d, Weight: 27.2Kg
AD68SS-0100Digital cable 68 Deg C, SS & PVC – 100m (PVC coated cable with Stainless Steel outer braid)
PVC cable with a stainless steel outer sheath provides additional protection against mechanical damage,
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour Red with stainless steel braid, Cable diameter 4.1mm +/- 0.12mm
100m reel on a plastic bobbin, Dimensions (mm): 300 Dia x 100d, weight: 2.92Kg
AD68SS-0500Digital cable 68 Deg C, SS & PVC – 500m (PVC coated cable with Stainless Steel outer braid)
PVC cable with a stainless steel outer sheath provides additional protection against mechanical damage,
Alarm temperature 68 Deg C (155 Deg F), Max Ambient temperature 45 Deg C (113 Deg F)
Operating voltage 0 to 30 VAC, 0 to 42 VDC
Colour Red with stainless steel braid, Cable diameter 4.1mm +/- 0.12mm
500m reel on a wooden bobbin, Dimensions (mm): 430 Dia x 140d, Weight: 14.6Kg

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Title Size
ad68-0100-1-en-admin 848 KB
ad68ss-0100-1-en-admin 687 KB
ad68p-0100-1-en-admin 847 KB
ad68n-0100-1-en-admin 890 KB
Alarmline II Technical Manual 2 MB

Additional information

Weight0.09 kg