Extech Model 407744 Sound Level Calibrator (94dB)

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Frequency Range: 1000 Hz Frequency Accuracy: ±5%
Sound Pressure Level Range: 94dB Sound Pressure Level Accuracy: ±0.5dB
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 mm x 127mm)
Weight: 0.75 lbs (340 g)

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