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Voltcraft SL 451 Sound Level Meter and Data Logger 31 5Hz to 8kHz Voltcraft SL 451 P The Voltcraft SL 451 Sound Level Meter and Data Logger has an unbeatable set of features In addition to standard features the SL 451 has a data logger and USB port It is protected by a robust housing and moulded protective rubber case making this device is suitable for use in tough conditions P P The device has a measurement range from 30dB to 130 dB with auto range function The integrated data logg
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