Extech 407744 94dB Sould Level Meter Calibrator
1kHz Professional 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
* For use on Sound Level Meters with 0.5″ or 1.0″ microphones
* Durable die-cast, aluminum housing 1kHz sine wave at 94dB/114dB is generated to an accuracy of 5% (frequency) and ±0.8dB
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