Ravel RE-428 optical beam smoke detectors for large open spaces: RE-428-FR up to 50 m and RE-428-HR up to 100 m range, for conventional and addressable systems.
Ravel optical beam detector
An optical beam detector sends a beam across a large space and raises the alarm when smoke weakens it. One unit can cover what would need many point detectors on a high ceiling. Ravel RE-428 detectors come in 50 m and 100 m range.
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