ENVIRONMENTAL MONITORING
NOISE MONITORING SERIES – NM20 & NM60
NM20 & NM60
Our Noise Monitoring Series combines the power of the NM20 (Noise Sensor) and the NM60 (Noise Hub) to provide a scalable, real-time noise monitoring and alerting system for industrial, manufacturing, and high-noise work environments.
This integrated system is ideal for large-scale noise management, allowing real-time monitoring, proactive hearing protection enforcement, and seamless expansion as operational needs grow.
PROTECT HEARING
LED VISUAL ALERTS
SCALABLE NOISE MANAGEMENT
MONITORING & REPORTING
CONTINUOUS DB MEASURING
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ENVIRONMENTAL MONITORING
NOISE MONITOR SYSTEM
NM-SERIES
NM20
NOISE MONITORING SENSOR
Detect hazardous noise levels with continuous measurement of ambient noise levels and provides local visual alerts to workers.
FEATURES
REAL-TIME, IN-FIELD MONITORING
- Accurate, real-time, in-field ambient noise monitoring
INSTANT VISUAL ALERTS
- Local visual alerts after pre-set thresholds are exceeded (flashing red LED headphones alert employee to wear hearing protection0n).
USER-FRIENDLY
- Customizable warning thresholds
INTEGRATABLE & SCALABLE
- Functions as stand-alone unit or as part of a broader network when linked to the NM60
INTEGRATABLE & SCALABLE
- Optional RS485, relays, and wireless communication for advanced integration
SENSING CAPABILITIES
- Customizable Db thresholds trigger visual alerts
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Equivalent Continuous A-weighted Sound Pressure Level (LAeq) measurement
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Time-Weighted Average (TWA) over 8-hour shifts (optional models)
TECHNICAL SPECIFICATIONS
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Power Supply: 115/230 VAC (standard); 9–24 VDC for Intrinsic Safe model
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Power Consumption: Typical 3W, Maximum 5W
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Communication Options (for NM20 with comms model):
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RS485 Modbus RTU
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Wireless communication to Gateway (up to 500m range)
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Relay Contacts: Up to 250 VAC / 30 VDC, 6 A
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Measurement Units: Decibels (dB)
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Compliance: Refer to Certification Documents
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Warranty: 1-year warranty with 12-month service life (6 months in harsh environments)
COMPLIANCE & WARRANTY
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Intrinsically Safe model available (NM20 – ExiA)
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Complies with occupational health and safety standards for industrial noise exposure
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Certification documents available upon request
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Warranty: 1 year warranty with 12-month service life (6 months in harsh environments)
INDUSTRY APPLICATION
NM60
CENTRAL MONITORING HUB
The NM60 acts as the primary tracking point of all connected NM20 sensors, processing real-time noise levels from the connected NM20 sensors into visual alerts.
OVERVIEW
The NM60 functions as a central noise monitoring hub that aggregates real-time data from up to 10 x NM20 Sensors simultaneously via wireless communication (up to 100 meters per sensor), providing a central visual warning point for employees before they enter high-noise zones, such as workshops, plants, or large production areas.
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Central Noise Tracking & Display:
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Primary point for real-time noise level tracking, reporting, and system-wide awareness from all connected NM20 sensors.
- Positioned at access points of large areas to warn employees of high noise levels before they enter.
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FEATURES
REAL-TIME ALERTS
- Real-time visual warning for excessive noise levels
- Flashing red headphone symbol prompts workers to wear hearing protection
WIRELESS, SCALABLE, CUSTOMIZABLE
- Supports comprehensive noise monitoring across large areas
- Customizable noise level warning thresholds
- Wireless connection for up to 10x NM20 sensors within a 100m radius
- 2x built-in relays for triggering external devices or alarms
- 8-hour Time-Weighted Average (TWA) capability
SENSING CAPABILITIES
- Customizable Db thresholds trigger visual alerts
- Capable of supporting wireless sensor networks for noise mapping
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TECHNICAL SPECIFICATIONS
- Power Supply: 115/230 VAC
- Wireless Sensor Connectivity: Up to 100 meters
- Visual Indicator: Flashing red headphones
- Relay Outputs: 2x built-in relays
- Measurement Units: Decibels (dB)
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COMPLIANCE & WARRANTY
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Intrinsically Safe model available (NM20 – ExiA)
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Complies with occupational health and safety standards for industrial noise exposure
-
Certification documents available upon request
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Warranty: 1 year warranty with 12-month service life (6 months in harsh environments)
INDUSTRY APPLICATION
NM-SERIES SETUP
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CONFIGURABLE WIRED/WIRELESS REPORTING
- SCADA Software enabled, including particulate matter readings per field unit and dust size grouping
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- Reliable data transfer via wired or wireless options:
- Wired: RS485 (Modbus-RTU)
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- Accurate, real-time, in-field measurements of hazardous gas ambient temperature and humidity
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CONVEYER BELT WEAR DETECTION
- Achromatic detection: Proactive SO₂ and CO monitoring from high heat production caused by belt degradation, enabling early intervention before significant damage or risks arise.
MULTI-SENSING CAPABILITIES
- MOS, SO₂, CO, CO2, VOC, Temperature, Relative Humidity
AUDIBLE & VISUAL ALERTS
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BATTERY BACK-UP
- Built-in battery back-up (up to 8 hours)
- Automatic charging when connected to a supply line
USER-FRIEDNLY & ROBUST
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SMART LASER SENSING
- Intelligent laser particle counting for PM1.0, PM2.5, PM10
- Real-time data on TWA (time-weighted average)
USER-FRIENDLY & LOW MAINTENANCE
- Self-cleaning, minimal maintenance (no pumps or filters)
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ACCURATE & CONNECTED
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AUDIBLE & VISUAL ALERTS
- Optional Audible (93dB) alert at configurable, pre-set levels
- 360° Red red (alarm) and green (no alarm) light indication on device
ROBUST
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WIRELESS/WIRED COMMUNICATION
- RS485, Modbus-RTU
- IoT
- Private 5G Enabled
- Built on open-integration standards
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- Accurate, real-time, in-field measurements of hazardous gas ambient temperature and humidity
- Follows NIOSH standards to reduce false alarms (Unlike traditional systems that rely on ionization or optical sensor
CONVEYER BELT WEAR DETECTION
- Achromatic detection: Proactive SO₂ and CO monitoring from high heat production caused by belt degradation, enabling early intervention before significant damage or risks arise.
MULTI-SENSING CAPABILITIES
- MOS, SO2, CO, CO2, VOC, Temperature, Relative Humidity
AUDIBLE & VISUAL ALERTS
- 16 x 2 OLED Display to easily see measurements
- 360° Configurable RGBY Strobe light to indicate alarm and no alarm
BATTERY BACK-UP
- Built-in battery back-up (up to 8 hours)
- Automatic charging when connected to a supply line
USER-FRIEDNLY & ROBUST
- IP65 Rated (water & dust tight)
- Operating temperatures range from -20°C to 70°C
- Easy to install
WIRELESS/WIRED COMMUNICATION
- RS485, Modbus-RTU
- IoT
- Private 5G Enabled
- Built on open-integration standards




