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Fire-fighters communication system EN 81-72

Fire-fighters communication system EN 81-72
Fire-fighters communication system EN 81-72
Fire-fighters communication system EN 81-72
Fire-fighters communication system EN 81-72

The fire-fighters communication system enables a two-way communication between the car of the fire-fighters lift, the fire-fighters access level and the machine room of the lift.

The system consists of three components:

  • handset (handset/ exchange)
  • fire-com (hands-free speakerphone/ fire-fighters speakerphone)
  • free-com (hands-free speakerphone/ car speakerphone)

Fire-fighters operation is initiated via the fire-fighters switch.

Connectivity
Lines High, Low, GND, Line
Electrical data
Power supply 24 V DC (±15 %)
Current consumption (closed-circuit status) approx. 40 mA
Operating voltage min. 12 V
Current consumption (operating status) approx. 150 mA
Current consumption (communication) approx. 250 mA
Other
Network extension (with 0.5 mm²) max. 250 m
Network extension (with 1 mm²) max. 500 m
Number of participants (handsets) 1
Number of participants (hands-free speakerphones) 2
Compliance
EN 81-72 X
Fire-fighters communication system EN 81-72
  • X

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