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Extech 407768 High Accuracy Sound Level Meter with PC Interface
407768 High Accuracy Sound Level Meter with PC Interface
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Our Price: $349.99

Product Code: EXT-407768

NIST Certificate (Adds 7-10 days):



  • Auto/Manual ranging from 30 to 130dB in three 50dB ranges
  • Meets ANSI and IEC Type 2 standards
  • A and C selectable frequency weightings
  • Fast and Slow selectable response times
  • Large digital display with 0.1dB resolution
  • Condenser microphone provides precision and stability
  • Min/Max and Max Hold
  • AC output for recorders
  • RS-232 interface for capturing data directly on a PC
  • Complete with batteries, Windows 95/98/NT/2000/XP compatible software, interface cable, and case


  • Machine noise evaluation
  • OSHA compliance testing
  • Community noise measurement
  • Noise ordinance
  • PC interface for data collection


  • Digital Display: 5 digit Autorange LCD
  • Measurement Range: 30 to 130dB
  • Resolution: 0.1dB
  • Accuracy: +/-1.5dB @94dB for a 1kHz sine wave
  • Microphone: 1/2" Electret Condensor
  • Frequency Weighting: "A" and "C" type
  • Time Response: Slow/Fast
  • Measurement frequency range: 31.5Hz to 8KHz
  • Analog output: AC: 0.5V (full scale)
  • Applicable Standards: IEC 651 Type 2, ANSI S1.4 Type 2
  • Power Supply: 9V battery
  • Dimensions: 10.6x2.7x1.1" (268x68x29mm)
  • Weight: 0.63lbs. (258g)

Download User's Manual

Download Sound Level Chart

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