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Functional Description Passive repeater: hand-cranked generator to call and voice calls by using the place where explosion-proof requirements. Requirements with AQ-3/AQ-3B type barrier to use. Explosion-proof type: intrinsically safe. Wall installation.
Technical parameters Environmental Noise: ≤ 75dB ringing level:> 85dB (A). Color : black (RAL 000 15 10) Weight: 1.7kg Protection class: IP44
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