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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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High Accuracy Sound Meter Measures Both High and Low Ranges
Extech Instruments 407732 Low/High Range Sound Level Meter with Backlit LCD
Extech Instruments 407732 Low/High Range Sound Level Meter with Backlit LCD
Extech Instruments 407732 Low/High Range Sound Level Meter with Backlit LCD
Item# 90223
Price: Normally $199.99 
Hot Deal $168.66
Free shipping on orders over $175 - See Details


  • High accuracy meets ANSI and IEC 651 Type 2 standards
  • High and Low measuring ranges
  • Data Hold and Max Hold functions
  • Backlit display to view in dimly lit area

Essential Info

The Extech 407732 Digital Sound Level Meter measures and displays sound pressure levels in dB from 35 to 130dB. The LCD is backlit for viewing readings in dimly lit areas. User selectable features include Frequency Weighting (A and C), Response Time (Fast and Slow), Max Hold, and Range (High and Low). Careful use of this meter will provide years of reliable service.

  • Enforcing community noise ordinances
  • Meeting government safety issues (OSHA)
  • Installing audio systems
  • Product noise certification and reduction

  • Manuals/Software

    What's Included

    1x - Sound Meter
    1x - Microphone Wind Screen
    1x - 9V battery


    ManufacturerExtech Instruments
    Manufacturer Product No407732
    Display4-digit (4000 count) backlit LCD
    Display update rate0.5 seconds
    Microphone0.5" Electret condensor
    Measurement Bandwidth31.5Hz to 8KHz
    Dynamic range65dB
    Measurement Range35 to 130dB (Low: 35 to 100;High: 65 to 130dB)
    Frequency weightingA and C (selectable)
    Accuracy / Resolution± 1.5dB (under reference conditions) / 0.1dB
    StandardsMeets ANSI and IEC Type 2 SLM standards
    Maximum Hold decay time<1dB / 3min
    Response timeFast: 125 milliseconds / Slow: 1 second
    Calibration source required1KHz sine wave @ 94dB
    Power9V Battery (Included)
    Battery life50 hours (typical);low battery indicator alerts user
    Automatic power offAfter approx. 15 minutes of inactivity
    Operating temperature32 to 104°F (0 to 40°C)
    Operating humidity10 to 90% RH
    Storage temperature14 to 140°F (-10 to 40°C)
    Storage humidity10 to 75% RH
    Dimensions9.45" x 2.68" x 1" (240 x 68 x 25mm)
    Weight6.75 Ounce (210g)
    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



    9V Batteries       
    9V Batteries       

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