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BS 5839-5 88th Edition, March 31, 1988
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Fire Detection and Alarm Systems in Buildings - Part 5: Optical Beam Smoke Detectors
Includes all amendments and changes through Reaffirmation Notice , February 25, 1998
Additional Comments: W/D NO S/S
Page Count:24
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Requirements, methods of test and performance criteria for detectors with ranges between 1 m and 100 m.