What is the Maximum No. of detectors in one Zone? it is 20 or 15..Give the ref

What is the Maximum No. of detectors in one Zone? it is 20
or 15..Give the refferance too. Booklets says 20 and RTTC
says 15.

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What is the Maximum No. of detectors in one Zone? it is 20 or 15..Give the refferance too. Booklet..

Answer / sdelectgy

Detector i.e Fire detector eg Smoke detactor/Heat detector

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