Sound Level Calibrators

Sound Level Calibrators
Click here to enlarge
Call for Pricing

Product SKU: 407744/407766

Product: Sound Level Calibrators

94dB or combination 94dB/114dB, 1kHz Professional Calibrator for 0.5" or 1.0" 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

Complete with two 9V batteries, carrying case, and screwdriver

Model 407744

Battery test position with battery status LED

indicates if battery is good

1kHz sine wave at 94dB is generated to an

accuracy of 5% (frequency) and 0.8dB


Model 407766

LED indicator lights up when power is on

Level position to select 94dB or 114dB

1kHz sine wave at 94dB/114dB is generated to an accuracy of 5% (frequency) and 0.8dB

3 position switch (OFF/94dB/114dB)



Frequency: 1000 Hz Accuracy: 5%

Sound Pressure Level: 94 dB (407744); 94dB/114dB (407766) Accuracy: 0.5dB (94dB), 1dB (114dB)

Distortion: <2% Total Harmonic Distortion (THD)

Operating Temperature: 32 to 122F (0 to 50C)

Power Supply: Two Heavy duty, alkaline 9V Battery

Power consumption: Approx. 10mA DC

Dimensions: 2.2" diameter x 5.6" long (50 x 127mm)

Weight: 340g (0.75 lbs.)

NIST Certificate

Both the 407744 and the 407766 calibrators are available with NIST Certificates should one be required: 407744-NIST/407766-NIST

Ask a question about this product