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ACOEM (01dB) · 01dB FUSION · Handheld sound level meter

FUSION

Current

Class 1 sound level meter and analyser with a colour display, three-key operation, built-in WiFi, LAN and GPS and a built-in or optional 4G modem, used handheld or as a monitoring point in the DSC01 outdoor case with the DMK01 microphone unit. Modules cover environmental noise, building acoustics, health and safety and wireless vibration; data is processed in dBTrait, dBFA, dBInside and Cadence.

Specifications verified on .

Type
Handheld sound level meter
Class
Class 1
Connectivity
WiFi, LAN (RJ45), GPS, 4G modem (FUSION 4G; optional on FUSION SLM), USB, RS-232, TTL I/O, mini HDMI
Battery life
24 h
Compare with other instrumentsAll handheld sound level meters

Specifications

As published by ACOEM (01dB). Fields the manufacturer does not publish are omitted rather than estimated.

Standards and class — FUSION
SpecificationValue
IEC 61672-1 classClass 1
StandardsIEC 61672 class 1, ISO 3382 (reverberation time, Building Acoustics module), ISO 16283 (sound insulation, via dBInside)
Pattern approvalsLNE MTG1024 (France, certificate linked on product page), LNE 27092 rev. 5 (France, 4 April 2024), PTB ZDS-DE-16-M-PTB-0006 Rev 3 (Germany), METAS CH-A3-24119-00 (Switzerland), CEM (Spain), BEV 2025-0.621.669 (Austria), LNM/IPQ (Portugal, 2023)
Measurement — FUSION
SpecificationValue
ParametersLeq, sliding Leq, noise dose, PNL and PNLT (aircraft indicators), level-threshold events (up to 24 programmable time periods), RT60 (Building Acoustics module), sound insulation ratings per ISO 16283 (dBInside)
Analysis — FUSION
SpecificationValue
Reverberation timeYes
Building acousticsYes
Audio recordingYes
Logging and data — FUSION
SpecificationValue
MemorySD card, 2 to 128 GB
Hardware — FUSION
SpecificationValue
Microphone1/2" G.R.A.S. 40CE with built-in preamplifier
Outdoor microphone kitDMK01 outdoor microphone unit (0 or 90 degree reference direction); DSC01 weatherproof case
Weather sensorsYes
Displayhigh-definition full-colour screen, 3-key keyboard
Battery life24 h
External power8 to 28 V DC; optional 12/24-day battery pack; DSC01 case autonomous up to 30 days
Autonomy on internal power1 days
Connectivity and software — FUSION
SpecificationValue
ConnectivityWiFi, LAN (RJ45), GPS, 4G modem (FUSION 4G; optional on FUSION SLM), USB, RS-232, TTL I/O, mini HDMI
Remote controlremote settings control, SMS alerts, Acoem WebMonitoring, Cadence platform
SoftwaredBTrait, dBFA, dBInside, Cadence, Acoem WebMonitoring
Latest firmwareFWa 3.02 / FWm 3.00 (support FAQ, June 2025)

Variants

Variants of the FUSION as the manufacturer names them
VariantDifference
FUSION 4GBuilt-in 4G modem; trigger, advanced indicator, aircraft indicator and push data options
FUSION SLMLower-priced configuration with most FUSION 4G functions, modem optional, dBTrait Viewer included
FUSION EssentialHandheld/indoor configuration announced December 2024: no built-in 4G modem, 40CE microphone without water-repellent membrane, certified tamper-proof; otherwise most FUSION functions

Where this data comes from

Manufacturer documents used for this record
KindDocumentAccessed
Product pageFusion 4G
Product pageFusion SLM
DatasheetFusion brochure (Acoem, 2023)
Approval certificateFUSION Certification & Approbation (Acoem support portal)
Press releaseAcoem Fusion receives type approval from Portugal's National Metrology Laboratory
Firmware notesFAQ about firmware update FWa 3.02 / FWm 3.00
Press releaseIntroducing the Fusion Essential (Acoem Australasia, December 2024)
Product pageFusion SLM (Acoem short link page, links brochure and technical datasheet)

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

Spec out of date? Tell us (reference acoem-fusion).

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

Functions owners would like to see in a firmware update or a successor model.

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