94dB Sound 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 is generated to an accuracy of 5 frequency and 0 8dB