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Bedrock · Bedrock SMxx · Handheld sound level meter

Bedrock SM50

Current

Class 2 sound level meter and STIPA analyser on the SMxx hardware platform, supplied with a 1/4-inch class 2 microphone. Measures STIPA and Full STI to IEC 60268-16 rev. 4 and rev. 5, with real-time octave analysis, FFT, reverberation time, building acoustics and LAeq logging, for voice alarm verification and public address commissioning.

Specifications verified on .

Type
Handheld sound level meter
Class
Class 2
Octave bands
1/1 and 1/3
Connectivity
USB
Weight
530 g
Battery life
4 h
Compare with other instrumentsAll handheld sound level meters

Specifications

As published by Bedrock. Fields the manufacturer does not publish are omitted rather than estimated.

Standards and class — Bedrock SM50
SpecificationValue
IEC 61672-1 classClass 2
StandardsIEC 61672-1:2014 group X class 2, ANSI S1.4 type 2, IEC 60268-16 rev. 4 (2011) and rev. 5 (2020), IEC 61260:2014, ISO 3382-2, ANSI S12.2, ISO 1996
Measurement — Bedrock SM50
SpecificationValue
Measurement range30 to 122 dB with the included microphone; electronics > 110 dB combined ranges
Linearity range31 to 121 dB (low range); 47 to 123 dB (high range), Z-weighted
Peak rangeup to 124 dB (highest range, 20 Hz to 20 kHz)
Frequency range20 Hz to 20 kHz
Frequency weightingsA, C, Z
Time weightingsF, S, I
ParametersLeq, SEL, Lpeak, L10, L90 and other percentiles, STI, RT60, Dn, R', DnT, L'nT, NR/NC/PNC/NCB/RC curves
Analysis — Bedrock SM50
SpecificationValue
Octave bands1/1 and 1/3
Octave band filter classexceeds class 1 (IEC 61260:2014); 1/6 and 1/12 octave also available
FFTFFT analyser (line count not published)
Reverberation timeYes
Building acousticsYes
Speech intelligibilitySTIPA and Full STI
Audio recordingYes
Logging and data — Bedrock SM50
SpecificationValue
Memory4 GB internal
Hardware — Bedrock SM50
SpecificationValue
MicrophoneBAMT2 1/4" omnidirectional free-field, class 2, XLR 48 V phantom, 30 mV/Pa
Detachable preamplifierYes
Display3.2" resistive colour touch LCD, 320 x 240
BatteryNiMH pack, 4.8 V, 2500 mAh
Battery life4 h
Weight530 g
Dimensions (mm)210 x 85 x 55 (excluding microphone)
Operating temperature (°C)5 to 35
Connectivity and software — Bedrock SM50
SpecificationValue
ConnectivityUSB
Remote controlremote-control API over USB
SoftwareBedrock Elite Analyzer, Bedrock Studio

Where this data comes from

Manufacturer documents used for this record
KindDocumentAccessed
Product pageBedrock SM50 STIPA Meter
DatasheetBedrock SM50 datasheet, August 2026
ManualSMxx user manual v3.6.4

Verified on . Only the manufacturer’s own published material is used; distributor pages are not sources.

Spec out of date? Tell us (reference bedrock-sm50).

Verified owner reviews

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Known issues and firmware notes

Hardware and firmware problems reported by owners, with the firmware version concerned and any manufacturer response.

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Feature requests

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