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 |