Extech 407744 Sound Level Calibrator, 94 dB

The Extech 407744 is a 1kHz Professional Calibrator for 0.5" or 1.0" Microphones.

• 94dB Sound Calibrator for .5” or 1” microphone
• 1kHz sine wave at 94dB is generated to an accuracy of ±5% (frequency) ±0.5dB
• For use with all of Extech’s Sound Level Meters
• Includes screwdriver, two 9V batteries, and carrying case

Calibrates and verifies Sound Level Meter operation

• Frequency: 1000 Hz, ±5% Accuracy
• Sound Pressure Level: 94 dB, ±0.5dB Accuracy
• Distortion: <2% Total Harmonic Distortion (THD)
• Operating Temperature: 32 to 122°F (0 to 50°C)
• 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: 0.75 lbs. (340g)

• Extech 407744 Data Sheet.pdf
• Extech 407744 User’s Manual.pdf