The Extech 407750 is a Type 2 sound meter with PC interface and software option.
Specifications
Digital Display
3-1/2 digit (1999 count) Autorange LCD
Bargraph Display
50dB display range (1dB resolution);
Measurement Range
30 to 130dB (35 to 130dB for “C” weighting)
Resolution
0.1dB
Accuracy
±1.5 dB @ 94dB for a 1kHz sine wave
Microphone
Electret Condensor .24"(6mm dia.) type
Frequency Weighting
“A” and “C” type
Time Response
Slow/Fast
Sampling time
updates every 0.5seconds
Measurement frequency range
31.5Hz to 8KHz
Analog output
AC: 0.707Vrms (full scale); DC: 10mVDC/dB
Applicable Standards
IEC 651 Type 2, ANSI S1.4 Type 2
Power Supply
9V battery , optional AC adaptor
Dimensions
10 x 3.1 x 1.5"(256 x 80 x 38mm)
Weight
8.5oz. (240g)
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