### Extech 407744 94dB Sound Calibrator for 0.5" and 1" Microphones

Sound Measurement – Extech 407744 94dB Sound Calibrator for 0.5″ and 1″ Microphones

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Extech 407744 94dB Sound Calibrator for 0.5

Features and Specifications: Extech 407744 94dB Sound Calibrator for 0.5″ and 1″ Microphones

  • Calibrates and verifies Sound Level Meter operation
  • For use on Sound Level Meters with 0.5″ or 1.0″ microphones
  • Total Harmonic Distortion (THD) <2% at 94dB
  • Meets IEC standard 60942 1997-11
  • Battery test position with battery status LED indicates if battery is good

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94dB Sound Calibrator

1kHz 94dB professional sound calibrator for 0.5″ or 1.0″ microphones calibrates and verifies sound level meter operation. Battery test position with battery status LED indicates if battery is good.

Other Features

Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB to an accuracy of 5% (frequency) and ±0. 5dB (94dB). Meets IEC standard 60942 1997-11.

Includes

Comes with two 9V batteries, carrying case, screwdriver, and user manual. Model 407744-NIST is slso available with a Certificate of Calibration Traceable to NIST.

407766
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94dB/114dB Sound Calibrator

1kHz 94/114dB professional sound calibrator for 0.5″ or 1.0″ microphones calibrates and verifies sound level meter operation. Level position switch to select 94dB or 114dB with power on LED indicator light. Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB/114dB to an accuracy of 5% (frequency) and ±0.5dB (94dB)/±1.0dB (114dB). Meets IEC standard 60942 1997-11and comes complete with two 9V batteries, carrying case, and screwdriver. Model 407766-NIST is also available with a Certificate of Calibration Traceable to NIST.

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