Healthy people are able to hear sounds in the range of approximately 20Hz to 20kHz. If we consider the speed of sound propagation, the length of the sound wave can vary from approximately 17mm for 20kHz to 17m for 20Hz, which can lead to ineffective hearing protection if the hearing protection is designed to attenuate high frequencies and the worker is exposed to low frequencies, or vice versa. To solve this problem with 98% accuracy: SmartdB of course!!!



Standards - ANSI S1.25, IEC 60804, IEC 61672, IEC 60651, IEC 61252 and IEC61260
Weight - 115 g

Software - Compatible with Microsoft Windows | Real-time monitoring of all parameters
Functions - Play, Pause and Stop on the meter or remotely via Commander® tablet and PC
Parameters - MNS, LAVG, LEQ, TWA, TWAp, Dose, Dose8h, Dosep, NEN, Peak, Max, Min
Frequency weighting - A,C and Z
Time Weighting - Fast, Slow and Impulse
Octave bands - 31.5Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz and 8kHz

Microphone - Electret with 50mV/Pa sensitivity
Housing Material - Nylon with fiberglass additives

Profiles - Two simultaneous profiles

Criterion Level: adjustable from 80 to 90dB
Threshold Level: from 65 to 90dB
Doubling rate: 3,4,5 and 6dB


Height - 20mm
Width - 45mm
Length - 100mm


Power - Rechargeable Lithium Battery



No real-time communication - > 23 hours
With real-time communication - > 15 hours


Memory - 16GB
Histogram interval - 01 minute
Storage capacity - ≥ 60 dosimetries of 14h
Histogram - Histogram of all parameters including octave bands


Meter Measurement Range - From 65 dB to 130dB
Dose - From 0.1 to 99.999%
LEQ and LAVG - From 65 dB to 135dB
Peak Detector - From 100dB to 140dB
Accuracy - According to class 1 of IEC 60651 and IEC 61672
Frequency range - 31.5Hz to 12.5kHz
Sound level resolution - 0.1dB
LAVG and LEQ calculation resolution - 0.1dB
Dose calculation resolution - 0.1
Storage temperature - Up to 50°C
Working temperature - Up to 55°C


Communication protocol - Zigbee certified by Anatel Nº 1123-08-1209*
Communication range in free field - 300m
Communication frequency - 2.4GHz
Serial communication interface - Mini USB eRadio Zigbee*

Warranty - 01 year

Included accessories - USB cable, battery charger, 02 microphone protection foams, carrying case and INMETRO calibration certificate

Accessories not included - Zigbee radio communication interface, Central Commander® for remote controls and monitoring, USB module and signal repeater

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