ACOEM (01dB) · 01dB DUO · Noise monitoring station
DUO Smart Noise Monitor
DiscontinuedClass 1 sound level meter and noise monitoring station in one unit, sold under the 01dB brand with a sunlight-readable display, integrated WiFi/3G modem and GPS antenna, a weatherproof G.R.A.S. microphone with two configurable reference directions and continuous audio recording. Type approved by LNE, PTB and METAS. No longer listed in the current Acoem product range.
Specifications verified on .
- Type
- Noise monitoring station
- Class
- Class 1
- Channels
- 1
- Connectivity
- WiFi, 3G modem, GPS
- Battery life
- 60 h
Specifications
As published by ACOEM (01dB). Fields the manufacturer does not publish are omitted rather than estimated.
| Specification | Value |
|---|---|
| IEC 61672-1 class | Class 1 |
| Standards | IEC 61672 class 1 |
| Pattern approvals | LNE (France), PTB (Germany), METAS (Switzerland), Brazil (homologacao), China (pattern approval) |
| Specification | Value |
|---|---|
| Channels | 1 |
| Specification | Value |
|---|---|
| Audio recording | Yes |
| Specification | Value |
|---|---|
| Microphone | weatherproof G.R.A.S. microphone (model not stated) |
| Outdoor microphone kit | integrated weatherproof microphone, 0 or 90 degree reference direction |
| Display | sunlight-readable display |
| Battery life | 60 h |
| Specification | Value |
|---|---|
| Connectivity | WiFi, 3G modem, GPS |
| Remote control | 01dB WebMonitoring |
| Software | dBTrait |
Where this data comes from
| Kind | Document | Accessed |
|---|---|---|
| Approval certificate | DUO Certification & Approbation (Acoem support portal) | |
| Other | DUO support category (Acoem support portal) | |
| Product page | Sound level meters - Acoem (current range, DUO absent) |
Verified on . Only the manufacturer’s own published material is used; distributor pages are not sources.
Spec out of date? Tell us (reference acoem-duo).
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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Read next
- How to specify a noise monitoring station · Autonomy, comms, weatherproofing, outdoor microphone kits, remote calibration checks, cloud platforms, data ownership.
- Class 1 vs class 2 sound level meters · IEC 61672-1 tolerances, what the classes do and do not say, and where each is typically required.
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