Extech 407730 40-to-130-Decibel Digital Sound Level Meter

Product Description

,DEWALT DW618PK 12 AMP 2-1/4 HP Plunge- , Bosch 1617EVS 2-1/4 HP Variable-Speed Router ,Porter-Cable 7518 Speedmatic 15 Amp 3-1/4 HP Fixed Base 5-Speed ,Dremel 1100-N/25 7.2-Volt Stylus Lithium-Ion ,Porter-Cable 690LR 11-Amp Fixed-Base Router Product Description Whether you're monitoring workplace machinery, installing audio or alarm systems, or handling product noise certification and reduction, the Extech Digital Sound Level Meter gets the job done. This meter accurately monitors sound levels in a range from 40 to 130 decibels. It displays results in the large LCD display in two different ways, either by number or a fast-responding analog bar graph. The lightweight meter easily fits in your hand and can be used wherever you need it.
Digital Sound Level MeterAt a Glance:

• Records sound levels from 40 to 130 decibels
• Precise readings with +/-2 dB accuracy and 0.1 dB resolution
• Large LCD display with both number and analog graph readings
• Records sound values over time to track sound changes
• One-year limited warranty on parts and labor

Fast-responding analog bar graph with50 dB range shows trends. View larger.Accurately Measures Sound LevelsWherever you need to monitor sound levels, the Extech sound meter will do the job. The meter utilizes a 1/2-inch electric condenser microphone to monitor sound levels from 40 to 130 decibels at an accuracy of +/-2 dB with a 0.1 dB resolution. A windscreen is included to prevent distortion in the readings. User-friendly settings allow you to choose between either A or C weighting. The unit also mounts on a tripod, providing convenient hands-free readings.
Included windscreen prevents distortion.Large LCD Screen with Dual Reading DisplaysThe large, 2,000-count LCD display gives readings in large, clear numbers. At the same time, it shows the sound level readings using a fast-responding analog bar graph with a 50-decibel range that updates every 40 milliseconds for viewing varying trends. The unit has AC analog output and records max/min values over time.
Compact, Lightweight DesignThe Extech sound meter weighs less than 6 ounces, and is designed to fit comfortably in the palm of your hand. The meter is white with a black-framed screen and black buttons. Useful features include auto power-off, max hold functions, and fast/slow response time.
Product and Warranty InformationAll of Extech's assessment tools are factory calibrated to specifications and work to spec. You can also add an NIST calibration certificate for audits if necessary for licensed testing. The meter measures 9 by 2-1/5 by 1-7/10 inches (H x W x D), and uses four AAA batteries.
The Extech Digital Sound Level Meter is backed by a manufacturer's one-year limited warranty on parts and labor.
What's in the BoxMeter, microphone windscreen, four AAA batteries, and user manual.



This review is from: Extech 407730 40-to-130-Decibel Digital Sound Level Meter (Tools & Home Improvement)
I recently entered a contest sponsored by Lockheed Martin called Silent Stamina where the objective was to design and build a model airplane that would fly the longest time and not produce more than 60 db at full throttle.

This was the cheapest sound level meter I found with an accuracy of +/- 2%.
My meter read about 1.5db to 2db below the contest directors meter, close enough.