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Extech 407766 94/114dB Sound Calibrator
This 1kHz 94/114dB professional sound calibrator is for 0.5 in. or 1 in. microphones. Calibrates and verifies sound level meter operation. Level position switch to select 94dB or 114dB with power on LED indicator light. Durable die-cast aluminum housing generates a 1kHz sine wave at 94dB/114dB to an accuracy of 5% (frequency) and .5dB (94dB)/.0dB (114dB). Meets IEC standard 60942 1997-11. Comes complete with two 9V batteries, carrying case and screwdriver.
| Specifications | Range | Accuracy |
|---|---|---|
| Frequency | 1000 Hz | % |
| Sound Pressure Level | 94dB/114dB | .5dB (94dB), dB (114dB) |
| Distortion | <2% Total Harmonic Distortion (THD) | |
| Operating Temperature | 32 to 122 (0 to 50) | |
| 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) |