Extech Instruments 407736 Dual Range Sound Level Meter
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Extech Instruments 407736 Dual Range Sound Level Meter

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Measures and Displays Sound Level Readings in the 35-130dB Range
  • A/C frequency weighting with fast/slow response
  • Uses a 0.49" (12.3mm) condenser microphone
  • Large 0.5" tall, 3-1/2 digit LCD display
  • Tripod-mountable
  • Meets ANSI and IEC 651 Type II standards

Item #: 90298

Ships in 1 to 2 days

$279.96
  • Details
  • Specs
  • Reviews
  • What's Included
  • This sound level meter provides readings with 2dB accuracy. It measures levels in the 35-130dB range with A/C frequency weighting and fast/slow responses. The 'A' frequency matches that of the human ear and is best for environmental and hearing conservation programs. The 'C' frequency is a flatter response, best for analysis of machine, engines, etc. The fast response time can be used to capture sudden noise, while the SLOW response time is best for consistent noise levels. A large LCD display makes viewing data easy DC/AC conditioned outputs allow you to connect the unit to an analyzer or recorder. A built-in calibration check ensures an accurate reading every time. The meter requires the use of one 9-Volt battery, included.


  • Specifications
    Manufacturer Extech Instruments
    Manufacturer Product No. 407736
    UPC 793950407363
    Display 3.5 digit (2000 count) LCD
    Display Update Rate 0.5 seconds
    Microphone 0.5" Electret condensor
    Measurement Bandwidth 31.5 Hz to 8 KHz
    Dynamic Range 55dB
    Measurement Range 35 to 130dB (Low: 35 to 100;High: 65 to 230 dB)
    Frequency Weighting 'A' and 'C' (selectable)
    Applicable Standards IEC-651 & ANSI S1.4 Type 2
    Accuracy/Resolution +/- 1.5dB / 0.1 dB
    Maximum Hold Decay Time <1dB / 3 min
    Response Time Fast: 125 milliseconds
    Slow: 1 second
    Built-in Calibration Check 1 KHz internal sine wave @ 94dB
    AC Analog Output 0.65VAC rms (full scale);600 ohm output impedance
    DC Analog Output 10mVDC/dB;100 ohm output impedance (approximately)
    Power 9V battery
    Battery Life 50 hours (typical);low battery indicator alerts user
    Operating Temperature 32 to 104 degrees F (0 to 40 degrees C)
    Operating Humidity 10 to 90% RH
    Dimensions 9.45" x 2.68" x 1" (240mm x 68mm x 25mm)
    Weight 6.75 oz (210 g)
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    • 1x - Dual Range Sound Level Meter
    • 1x - Hard vinyl case
    • 1x - 9V battery

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