detection lines

[frankie_goes_to_hollywood]

detection lines - ?

The fire protection system in the buildings and areas of the site consists of the following main subsystems.
1) Fire detection and alarm system with:
Fire alarm panels with detection lines and emergency power supply,
Automatic fire detectors,
Manually operated push buttons
2) Fire water distribution network and firewater pumps with:
Outdoor Hydrant System,
Indoor Hydrant System,
Water Spray Systems,
Foam /Water wall hydrants

[DuFF]

Панели пожарной сигнализации с датчиками и резерным (аварийным) питанием
ИМХО.