What is frequency range for this device?

The SL510 has a frequency range from 31.5Hz to 8KHz.

does make 20hz to 20khz readings?

Thank you so much for your interest in our products. The 407032 model has a measurement bandwidth between 31.5Hz to 8KHz. Please check all the specifications of this meter here: http://www.extech.com/products/resources/407732_UM-en.pdf

Hello Checker,The 407760 comes with software, tripod, USB extension cable, windscreen, and 3.6-Volt Lithium battery.Best Regards

The model presented says 'Extech 407730' but in the description and image apears Extech 407732, which you are sending?

I am not sure where 407730 is appearing besides the comparison table between the different models. For simplicity, this page is for the Extech 407732. You would get the item in the pictures.

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Our Other Brands:Hewyn|Selfship

Description

🔊 Hear every detail, own every moment.

NEVER MISS A PEAK - Max/min hold function captures critical sound events effortlessly.
SMART POWER MANAGEMENT - Auto power-off extends battery life so you stay focused on the job, not charging.
READY FOR ANY ENVIRONMENT - Includes windscreen and runs on included alkaline batteries for immediate use.
VISUALIZE NOISE INSTANTLY - Fast-response analog bar graph complements the clear digital display for real-time monitoring.
PRECISION THAT SPEAKS VOLUMES - Measures sound levels from 40 to 130dB with 0.1dB resolution for pinpoint accuracy.

The Extech 407730 sound meter delivers precise noise level measurements from 40 to 130dB with a sharp 0.1dB resolution. Featuring a fast analog bar graph and digital display, it records max/min values and conserves power with auto shutoff. Compact and battery-powered, it’s ideal for professional noise monitoring in workplaces and audio systems.

Specifications

Brand	EXTECH
Model Number	407730
Product Dimensions	22.86 x 4.32 x 5.59 cm; 230 g
Color	white
Name List for Name Plates	Single Range
Power Source	Battery Powered
Voltage	9 Volts
Quantity	1
Included Components	マイクウィンドスクリーン、単4電池4本。
Are Batteries Included	Yes
Battery Type	Alkaline
Item Weight	230 g

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