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Extech 407766
Sound Level Calibrator with 94 dB or 114 dB Output

LED indicator lights up when power is on
Select 94 dB or 114 dB output
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
1 kHz sine wave at 94 dB and 114 dB (model 407766) is generated to an accuracy of 5% (frequency) and ±0.8 dB
Total Harmonic Distortion (THD) <2 % at 94 dB

Extech 407766 Shown

Product Information
Datasheet	301 KB
Manual	232 KB
PDF Help

Models	407744	407766
Frequency	1000 Hz
Sound Pressure Level	94 dB	94dB or 114dB
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
Battery Test Position	Yes	No
LED Power Indicator	No	Yes
3 position switch (Off/94dB/114dB)	No	Yes

Ordering Information
Model	Description	Buy Online	Price
407766	Extech 407766 94/114dB Sound Level Calibrator		$399.99
407766NIST	Extech 407766-NIST Calibrator Sound with NIST Calibration Certificate		$514.99
Additional Models Available
407744	Extech 407744 94dB Sound Level Calibrator		$299.99
407744NIST	Extech 407744-NIST Sound Level Calibrator		$414.99
Included Accessories
	(1) Carrying case (1) Screwdriver (2) 9V batteries	Included

*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.

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$20.00 Minimum on Total Order

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