Does this device need to be calibrated？

I would say no, the decible meter was precalibrated before I receive it. Luckily it still works well after one year.

Does this unit come with the Calibration Certificate?

No, this decibel meter does not come with a calibration certificate. You will need to purchase an acoustic calibrator separately and calibrate it yourself.

what does it mean how does it work.. does it have actual alarm that? "with Backlight Alarm" term what is it????

Hello thanks for asking. Yes, our sound level meter has back-light alarm function. "Back-light alarm" means when measured noise exceeds the value you set, the backlight will flashing. Say you set 66dB as the threshold, when the sound exceeds 66dB, then the backlit will flashing. By the way, you can also disable the auto shutdown function, then sound meter can continuously reading sound until you turn it off by manual. Hope this information can help you.

I'm trying to count car door slams and honks from an impossible neighbor. will this device count short bursts like slams?

Yes, it will detect short bursts of sound. But it's memory is limited to only the last event and it does not "count" events. You could photograph its "frozen display.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Decibel Meter Sound Level Reader 30-130dB(A), Hand-held Sound Noise Meter with Backlight Alarm, Digital Noise Meter Decibel Monitoring Tester Calibrated Audio Noise Volume Measuring Instrument

Product ID: 171402257

🎯±1.5 dB accuracy

💡Backlight alarm & large LCD

📊30-130 dB(A) range

11.00 OMR

Duties & taxes included

In stock

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Description

🔊 Own your soundscape—measure noise like a pro, anytime, anywhere!

WIDE DYNAMIC RANGE - Measures from whisper-quiet 30 dB to loud 130 dB environments—perfect for any setting.
READY OUT OF THE BOX - Includes batteries, wind-proof sponge, and manual—start monitoring noise instantly.
USER FRIENDLY DESIGN - Compact, lightweight, and one-hand operable with a clear backlit display for any lighting condition.
CONTINUOUS NOISE TRACKING - Disable auto-off to keep real-time noise data flowing without interruption.
PRECISION CALIBRATED SOUND MONITORING - Factory-calibrated for reliable ±1.5 dB accuracy, ensuring you never miss a noise spike.

This hand-held Decibel Meter offers precise noise level readings from 30 to 130 dB(A) with ±1.5 dB accuracy. Featuring a backlit LCD, alarm alerts, and continuous measurement capability, it’s designed for professionals managing noise pollution, workplace safety, or neighborhood noise complaints. Lightweight and portable, it comes fully calibrated and ready to use with included batteries and accessories.

Specifications

ASIN	B07ZHG76D8
Batteries	2 AAA batteries required. (included)
Best Sellers Rank	#38,566 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #16 in Sound & Noise Meters
Date First Available	October 23, 2019
Item Weight	4.8 ounces
Item model number	RZ1359
Manufacturer	RZ
Package Dimensions	6.14 x 3.78 x 1.42 inches

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