ENV-NOISEDigital Sound & Noise Level (dBA) Sensor for OSHA & HCAHPS compliance
Measures 30 dB to 120 dB with ±1 dB accuracy.
"A" weighted decibel sensing (dBA).
Monitor noise levels as per OSHA requirements.
Monitor HCAHPS noise level compliance in healthcare facilities.
Probe can be wall mounted or protrude through a ceiling.
Alerting via email, SMS and voice call.
Plug & play — SNMP, Modbus TCP & BACnet IP ready.
"A" weighted decibel sensing (dBA).
Monitor noise levels as per OSHA requirements.
Monitor HCAHPS noise level compliance in healthcare facilities.
Probe can be wall mounted or protrude through a ceiling.
Alerting via email, SMS and voice call.
Plug & play — SNMP, Modbus TCP & BACnet IP ready.
OSHA Workplace Compliance
OSHA requires a noise monitoring programme at or above 85 dB. Data centers routinely run from 70 dB up to 88 dB and beyond at peak.
HCAHPS Healthcare Scoring
The WHO recommends up to 30 dB in hospitals. Measured levels feed directly into HCAHPS patient experience scoring.
A-Weighted Measurement
30 dB to 120 dB at ±1 dB, weighted to how human hearing actually responds — the basis for every occupational noise limit.
Deployment Guidance
Where to place sensors for a defensible measurement: at head level, distributed across the space rather than at a single point.
How It Works
Connects to the base unit over a standard network cable, up to 100m (330ft). No local power, no software.
Flexible Integration
Readings and alerts over SNMP GET & TRAPS, Modbus TCP and BACnet IP, with email, SMS and voice call alerting.
RS-485 Model
Integrate with industrial control systems over Modbus RTU (RS-485) using the optional RTU addon.
Guided Video Tour
A short introduction to the noise level sensor and how it is deployed to monitor sound levels at the workplace.
Technical Specifications
View measurement range, accuracy, weighting, mounting and connectivity specifications for the ENV-NOISE.
Workplace Noise Level Monitoring
The Occupational Safety and Health Administration requires the implementation of a noise monitoring system when sound levels are at or above 85 dB. The ENV-NOISE lets you put that monitoring in place simply and cost effectively.
- Data centers are already in scope: white spaces produce 70 dB at the low end and 88 dB and above at peak — clearly past the OSHA threshold.
- Continuous rather than spot checks: a handheld reading captures one moment. Fixed sensors record the levels people are actually exposed to across a shift.
- Hearing loss from noise exposure has no cure. Monitoring gives you the understanding needed to act before damage is done.
Healthcare Noise Level Monitoring
The World Health Organization recommends noise levels of up to 30 decibels in hospitals. Actual levels are frequently far higher, and those levels feed into HCAHPS scoring through the patient experience survey.
- Objective measurement: IP based sensors record what the ward is really like at night, rather than relying on recollection.
- Per-department visibility: deploy across wards to identify which areas drive the score down.
- Threshold alerting: the base unit raises an alert as soon as a set level is exceeded, so staff can act in the moment.
Deployment Guidance
Sound levels vary substantially across a single room, so placement determines whether the measurement is defensible.
- At head level: measure where people are exposed, not at ceiling or floor height.
- Distributed: deploy across the space rather than at a single point — a data center hot aisle and its adjacent office read very differently.
- Mounting: the sound probe can be wall mounted or made to protrude through a ceiling tile, keeping the sensor body out of sight.
Application Guide
How It Works
The ENV-NOISE connects to the base unit over a standard network cable, up to 100m (330ft), which makes it an Ethernet sensor. The base unit is a standalone device with its own IP address — on its own it monitors the sensor and triggers alerts, with no PC or software required.
- Measures the noise level in decibels, A weighted.
- Sound probe wall mounted or protruding through a ceiling.
- Alerting via email, SMS and voice call.
- Optional Monitoring Software for central monitoring and trending — not required.
Some of our customers:
RS485 (Modbus RTU) version
Looking to integrate this sensor with your own gateway or industrial control system? For large accounts customers or OEMs we now do offer a RS-485 version of this sensor. It has the same specs as the normal sensor. However rather than talking to our base unit and then communicate over industrial protocols with 3rd party systems, this version allows for native integration bypassing our base units.
It offers the same features as our regular sensors but with following differences:
- RS485 Modbus RTU output
- individually addressable using dial switch
- 256 addresses available
- 12-24v DC input
Contact us for pricing & more info
It offers the same features as our regular sensors but with following differences:
- RS485 Modbus RTU output
- individually addressable using dial switch
- 256 addresses available
- 12-24v DC input
Contact us for pricing & more info