пожарная сигнализация: шлейфы, цепь

[Lisoma]

Комнаты должны быть снабжены пожарными сигнализаторами (датчиками дыма) -- сигнализаторы следует соединить в цепь с помощью шлейфов (проводов).

[SigGolfer]

All rooms must be equipped with smoke detectors. The smoke detectors should be connected with cable to form a circuit.

[tumanov]

loop = шлейф

www.systemsensor.com/pdf/I56-0932.pdf
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Smoke detectors and alarm system control panels have. specifications for allowable loop resistance. Consult the ...

http://www.patentstorm.us/patents/6104286-claims.html
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wherein a smoke detector loop from a central alarm system panel is monitored by the panel to distinguish an alarm state from a trouble state, said alarm state being present when said electrical detector senses said electrical condition, and said trouble state being present when it is detected that the loop is open or has a high impedance; ...

www.silentknight.com/pdffiles/Firepdf/5207pdf/5207comp.pdf
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Compatible 12-Volt Smoke Detectors (Max. per Loop) ..