Casella · Guardian · Noise monitoring station
Guardian2
CurrentFixed site-boundary environmental monitor configured at order for noise, particulate, vibration, wind and VOC. The noise channel is a Class 1 sound level meter to IEC 61672-1 reporting LAeq, LAmax, LAmin, LA10 and LA90 to the Casella247 cloud platform through the mHub logger with a multi-network e-SIM, with text and e-mail alerts. Mains, solar or battery powered in an IP65 enclosure.
Specifications verified on .
- Type
- Noise monitoring station
- Class
- Class 1
- Channels
- 1
- Connectivity
- cellular (mHub logger with multi-network e-SIM)
Specifications
As published by Casella. Fields the manufacturer does not publish are omitted rather than estimated.
| Specification | Value |
|---|---|
| IEC 61672-1 class | Class 1 |
| Standards | IEC 61672-1 class 1 |
| Specification | Value |
|---|---|
| Channels | 1 |
| Measurement range | 20 to 140 dB RMS |
| Frequency weightings | A |
| Parameters | LAeq, LAmax, LAmin, LA10, LA90, 10-hour LAeq |
| Dosimetry | No |
| Specification | Value |
|---|---|
| Outdoor microphone kit | windshield enclosure system (optional accessory) |
| Weather sensors | Yes |
| External power | mains 100 to 250 V AC, solar or battery options |
| Autonomy on internal power | 9 days |
| IP rating | IP65 |
| Specification | Value |
|---|---|
| Connectivity | cellular (mHub logger with multi-network e-SIM) |
| Remote control | Casella247 cloud platform with automated reports and SMS/e-mail alerts |
| Software | Casella247 |
Variants
| Variant | Difference |
|---|---|
| Guardian2 Noise (208057D) | noise only |
| Guardian2 Noise and Vibration | adds vibration sensor |
| Guardian2 Noise, Vibration, Wind | adds wind speed and direction |
| Guardian2 Particulate, Noise, Vibration, Wind | adds dust (particulate) monitoring |
| /VOC | adds photo-ionisation detector for VOCs |
Where this data comes from
| Kind | Document | Accessed |
|---|---|---|
| Product page | Casella Guardian2 Class 1 noise monitor for construction sites | |
| Datasheet | Guardian2 Multi-Agent Monitoring Station datasheet SM94 v8 (hosted by TSI, Casella's parent) |
Verified on . Only the manufacturer’s own published material is used; distributor pages are not sources.
Spec out of date? Tell us (reference casella-guardian2).
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Known issues and firmware notes
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Feature requests
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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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