Extech 407766 Sound Calibrator
Starting at $429.99

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  • Level position to select 94dB or 114dB
  • 1kHz sine wave
  • Accuracy of 5% (frequency) and ±0.5dB (±0.8dB at 114dB)
  • Calibrates and verifies sound level meter operation
  • For use on sound level meters with 0.5" or 1.0" microphones
  • Durable die-cast, aluminum housing
  • Total Harmonic Distortion (THD) <2% at 94dB
  • Complete with two 9V batteries, carrying case and screwdriver

This product is an accessory for the following products:

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The Extech 407766 is a precision, professional quality sound calibrator. This calibrator creates a 1kHz sine wave to an accuracy of 5% (frequency) and ±0.5dB (±0.8dB for 114dB), to calibrate and verify sound level meter operation. The Extech 407766 is for use with sound level meters with 0.5" or 1.0" microphones. This calibrators is made from durable die-cast, aluminum housing for long life. The Total Harmonic Distortion (THD) is less than 2% at 94dB.