The SEFRAM 9835 sound level meter is a digital sound level meter measuring from 30 to 130dB. This sound level meter has been designed to meet the measurement requirements for safety in industry, health and any application that requires sound level measurement.
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The SE50AL foam is an alveolar acoustic foam made up of polyurethane (2,000x1,400) and which is 50 mm thick (a 20mm heel/30 mm spikes).