Hello, the equipment came with a certificated paper of conformity or similar? Thanks

My unit did not include any form of certification. Hope this helps.

I am not interested in a Cert of conformity, does the unit come with a calibration certificate?

Hi, the unit doesn't come with calibration certificate, we can do the calibration certificate if you need but with extra cost. Please send email to us if you need to do the calibration certificate, we will quote you the price.

Hi at what distance from which point of the device should SPL be measured?

As noted, the level produced depends the VOLUME of the calibrator CHAMBER, hence how well the microphone fits into it. There is a small "stop" at the base of each microphone adapter. With just the microphone adapter in place and no microphone, it's very soft even close to your ear. 1. Insert the microphone to the point that it stops 2. Turn on the calibrator to the required level, 94 dB is the more common 3. Set the meter to "A" weighting 3. Adjust your meter as appropriate 4. Repeat for the second level and with both "A" and "C" weighting if the meter has both. Make notes of any differences for future reference.

On the digital sound level meter calibrator nd9 is there any way i can get a users manual emailed to me?

Hi, please find the quick user guide from the link below. LINK: https://www.cd50.net/wp-content/uploads/2022/01/ND9_E.pdf

Professional Decibel Meter Calibrator Digital Sound Level Meter With Backlight

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🔊 Calibrate Like a Pro — Precision Sound, Anywhere, Anytime!

SMART LED INDICATORS - Stay informed with green LEDs for calibration status and red LED for low battery alerts.
ROBUST USER FRIENDLY - Carefully engineered 13.2mm cavity ensures safe, damage-free microphone insertion every time.
COMPACT PORTABLE DESIGN - Sleek 60x130x37.5mm benchtop form factor fits perfectly in your professional toolkit.
BATTERY EFFICIENT OPERATION - Auto power-off feature maximizes battery life, powered by included AA alkaline batteries.
TRIPLE LEVEL PRECISION CALIBRATION - Ensure flawless sound accuracy with 114dB, 94dB, and 104dB settings at 1kHz frequency.

The Professional Decibel Meter Calibrator by Gain Express Holdings offers high-accuracy sound calibration at three distinct levels (114dB, 94dB, 104dB) with a 1kHz frequency. Its compact benchtop design (60x130x37.5mm) and lightweight build (480g) make it portable and easy to use. Featuring smart LED indicators for calibration status and battery life, plus an auto power-off function, this calibrator ensures reliable, efficient operation powered by included AA batteries.

Specifications

ASIN	B08PD1BCH1
Batteries	2 AA batteries required. (included)
Batteries Required?	Yes
Batteries included?	Yes
Battery Cell Type	Alkaline
Battery description	battery_type_aa
Best Sellers Rank	110,861 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 12,673 in Test & Measurement
Colour	Sound Level Calibrator
Customer Reviews	4.7 4.7 out of 5 stars (41)
Date First Available	28 Dec. 2020
Item Package Quantity	1
Item Weight	310 g
Item model number	8930B
Manufacturer	Gain Express Holdings
Part Number	8930B
Product Dimensions	960 x 200 x 400 cm; 310 g
Size	Dimension: 60 x 130 x 37.5mm
Special Features	Calibration frequency at 1K Hz with three level 114dB, 94dB and 104dB, Vivid LED display with stability and low power indicator

Reviews

S**A

Works very well and well worth the money

5.09.2025

C**T

I found this worked great, along with the "Decibel Meter Data Logger Digital Sound Decibel Meter, Sound Level Meter with 43,000 Data Record & Export, Rechargeable Noise Meter with A/C Frequency&DC Output, 3-Color Alarm, Real Time Measurement" I got here. NOTE: I don't see it specified anywhere on the Amazon.ca listing, but the port on this model is about 13mm.

5.04.2026

A**.

Il calibratore è in classe 2 e pertanto non gli si può richiedere prestazioni da classe 1 (non può essere utilizzato per misure fonometriche a scopo legale). Controllato con un fonometro professionale in classe 1, recentemente calibrato da centro Accredia, fornisce 93.7 dB @ 1000 Hz. Perfettamente in linea con quanto richiesto a un calibratore in classe 2 (e anche meglio). Pertanto, consigliabile. Lo utilizzo correntemente con un microfono "di misura" (low cost, il famoso ECM 8000) per calibrare i vari software di analisi di spettro calibrabili che utilizzo. MI sembra ragionevolmente stabile nel tempo; il microfono entra in modo stabile nel suo foro. Oltre che con le schede audio, l'ho anche utilizzato con i registratori digitali "seri", registrando il segnale di calibrazione a 94 (93.7) dB SPL, prendendo nota della posizione dell'attenuatore di ingresso, a comando digitale (nel Tascam, ogni step fa 1.5 dB, esatti). Così mi ritrovo un file di riferimento, valido per ogni successiva registrazione, annotando il livello di rec (gain). Un particolare, non grave: il calibratore, utilizzato con un fonometro giocattolo da 60 euro ha fornito un'indicazione errata di 8 dB! Non è colpa del calibratore (e neppure, in fondo del fonometro) ma solo della griglia del microfono del fonometro, che no rispetta il disposto della norma IEC dei fonometri e pertanto non si accoppia con il calibratore. Il suddetto fonometro, controllato per confronto rispetto a un fonometro vero, in laboratorio, ha un errore non superiore a +/- 1 dB.

1.10.2023

P**N

Very good

1.12.2025

C**I

Recomendado: excelente calibrador de sonómetro, muy buen servicio y rapidez en la entrega. Gracias.

15.04.2026

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Professional Decibel Meter Calibrator, Digital Sound Level Meter with Backlight Display High Accuracy (114dB / 94dB / 104dB Calibrator)

Description

Specifications

Reviews

Common Questions