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 | Calibrates and verifies Sound Level Meter operation |
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 | LED indicator lights up when power is on |
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 | Level position to select 94dB or 114dB |
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 | For use on Sound Level Meters with 0.5" or 1.0" microphones |
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 | Durable die-cast, aluminum housing |
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 | 1kHz sine wave at 94dB/114dB is generated to an accuracy of 5% (frequency) and ±0.8dB |
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