I want to measure infrasound--- from 1 to 20 hz. Will it do it? also does it have an output to a computer?

It can not connect with computer and it is the sound meter to measure the db of the sound not the frequency. If there is anything else we can do for you in the future, you can just contact us and we are glad to serve you, and our mail address is amazon@protech-instruments.com

Does this device have an auto power off feature? I am looking for an item that does not automatically turn off after only 10-15 minutes.

Yes, this item have the auto power off function

What is the highest dB this device can read ?

Thank you for your question. Our PT6708 decibel meter has a measuring scope from 30 to 130 dB and an automatic shifting function.

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Description

🔊 Measure the noise that matters—because silence is the new luxury.

TRUSTED SUPPORTED - IEC651 Type 2 certified with 24/7 Protmex support—professional-grade reliability you can count on.
SPEED MEETS FLEXIBILITY - Switch effortlessly between fast (0.125s) and slow (1s) response modes for dynamic noise environments.
BUILT FOR REAL WORLD USE - Anti-slip, drop-resistant design with energy-saving backlight ensures reliable performance anytime, anywhere.
HUMAN CENTRIC SOUND ANALYSIS - A/C weighting modes tailor measurements to mimic human hearing or machine sound pressure.
PRECISION AT YOUR FINGERTIPS - High-quality AD636 chip delivers ultra-accurate sound readings with ±1.5 dB precision.

The Protmex PT6708 is a professional-grade digital sound level meter featuring a 30-130 dB range, ±1.5 dB accuracy, and a rapid 0.5-second response time. Equipped with A/C weighting modes and fast/slow measurement options, it adapts to diverse noise environments. Its robust, anti-slip design and energy-efficient backlight make it ideal for both day and night use. Certified to IEC651 Type 2 standards and backed by 24/7 support, it’s the go-to tool for precise noise monitoring in professional and personal settings.

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