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Tool Type
Noise Meter
Battery Operated
LCD Display
Ease of Installation
Beginner (Installs < 10 minutes)
Extech Instruments
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Measures and Displays Sound Level Readings in the 35-130dB Range
Extech Instruments 407736 Dual Range Sound Level Meter
Extech Instruments 407736 Dual Range Sound Level Meter
Extech Instruments 407736 Dual Range Sound Level Meter
Item# 90298
Price: Normally $279.99 
Hot Deal $259.96
Free shipping on orders over $175 - See Details


  • 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

Essential Info

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 ā€˜Aā€™ frequency matches that of the human ear and is best for environmental and hearing conservation programs. The ā€˜Cā€™ 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.


What's Included

  • 1x - Dual Range Sound Level Meter
  • 1x - Hard vinyl case
  • 1x - 9V battery

  • Specifications

    ManufacturerExtech Instruments
    Manufacturer Product No.407736
    Display3.5 digit (2000 count) LCD
    Display Update Rate0.5 seconds
    Microphone0.5" Electret condensor
    Measurement Bandwidth31.5 Hz to 8 KHz
    Dynamic Range55dB
    Measurement Range35 to 130dB (Low: 35 to 100;High: 65 to 230 dB)
    Frequency Weighting'A' and 'C' (selectable)
    Applicable StandardsIEC-651 & ANSI S1.4 Type 2
    Accuracy/Resolution+/- 1.5dB / 0.1 dB
    Maximum Hold Decay Time<1dB / 3 min
    Response TimeFast: 125 milliseconds
    Slow: 1 second
    Built-in Calibration Check1 KHz internal sine wave @ 94dB
    AC Analog Output0.65VAC rms (full scale);600 ohm output impedance
    DC Analog Output10mVDC/dB;100 ohm output impedance (approximately)
    Power9V battery
    Battery Life50 hours (typical);low battery indicator alerts user
    Operating Temperature32 to 104 degrees F (0 to 40 degrees C)
    Operating Humidity10 to 90% RH
    Dimensions9.45" x 2.68" x 1" (240mm x 68mm x 25mm)
    Weight6.75 oz (210 g)
    Important notes:
    Only defective exchanges for identical item within 30 days of purchase. No other returns allowed on this item. For defective returns after 30 days, please contact the manufacturer.
    Manufacturer contact information: Extech Instruments Corp, Tel: (781) 890-7440 Ext 200



    Sony Alkaline 9-Volt Battery       
    Sony Alkaline 9-Volt Battery       

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