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AWA3301C Intelligent Microphone
Microphone
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AWA3301C Intelligent Microphone

Smart IoT Noise Monitoring Solution: Combines microphone, signal processing, and network communication in one device, enabling intelligent noise monitoring with cloud connectivity.

Designed for Continuous Long-Term Deployment: Ideal for 24/7 noise monitoring in workplaces, factories, smart buildings, and environmental supervision applications.

Professional Measurement Accuracy (IEC 61672-1 Class 2): Ensures standardized and reliable sound level measurement performance for compliance and regulatory use.  High Dynamic Range for Complex Environments
Supports up to 146 dB(A) measurement range, covering both low-level ambient noise and high-intensity industrial noise.

Multiple Wireless & Wired Communication Options: Supports Wi-Fi (AP/STA), Bluetooth, RS-485, and audio output, enabling flexible integration into monitoring systems and platforms.

Cloud-Ready Data Transmission: Real-time data upload via network module supports remote monitoring, analysis, and centralized data management.

Low Self-Noise for High Accuracy: Inherent electrical noise below 30 dB(A) ensures stable performance in quiet environments.

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    Product Description

    The AWA3301C intelligent microphone is a smart microphone developed in tandem with the advancement of IoT and cloud technologies. Comprising a measurement microphone, a data processing module, a network transmission module, and a back-end platform, it is designed for long-term indoor noise measurement and monitoring applications, such as workplace noise assessment and noise monitoring in smart buildings.

    Product Video

    Features

    IoT-Enabled Smart Noise Monitoring System: Integrates measurement microphone, data processing module, and network transmission unit for real-time noise monitoring and cloud-based data management. 
    Built for Long-Term Continuous Monitoring: Designed for permanent or semi-permanent installation in applications such as workplace noise assessment and smart building noise monitoring. 
    Compliant with IEC 61672-1 Class 2 Standard: Ensures reliable and standardized sound level measurement performance for professional environmental monitoring. 
    High-Quality Measurement Microphone Integration: Equipped with AWA14421B 1/2-inch measurement microphone, offering stable sensitivity and accurate acoustic response. 
    Wide Dynamic Measurement Range: Supports A-weighted range up to 146 dB, suitable for both low-level environmental noise and high-intensity industrial sound environments. 
    Multiple Frequency Weighting Options: Supports A, C, and Z weighting, enabling flexible analysis for different acoustic evaluation requirements. 
    Advanced Time Weighting Functions: Includes Fast (F) and Slow (S) response modes for detailed noise behavior analysis. 
    Multiple Communication Interfaces: Supports Wi-Fi (AP/STA modes), Bluetooth, RS-485, and audio output, enabling flexible system integration. 
    Stable Wireless Transmission Capability: Wi-Fi transmission range up to 10 meters, suitable for indoor monitoring networks and distributed measurement systems.

    Main Performance Indicators

    AWA3301C Intelligent Microphone

    Standard

     

    IEC 61672-1:2013 Class 2

     

    Measurement microphone

    Model AWA14421B measurement microphone; outer diameter Φ12.7 mm (1/2"); nominal sensitivity level: -43.0 dB ± 3 dB. The following parameters are based on a sensitivity level of -43.0 dB.

    Frequency range

    20 Hz~12.5 kHz

    Linearity range

    A-weighted sound level: 35 dB to 146 dB

    C-weighted sound level: 45 dB to 146 dB

    Z-weighted sound level: 50 dB to 146 dB

    Linear ranges at other frequencies

    31.5 Hz：35～106 dBA

    4 kHz：35 dB～147 dBA

    8 kHz：35 dB～145 dBA

    12.5 kHz：35 dB～141 dBA

    Inherent electrical noise

    <30 dB (A-weighted), 40 dB (C-weighted), 45 dB (Z-weighted) (shorted via 20 pF capacitor)

    Frequency weighting

    A, C, Z weighting

    Time weighting

    F (Fast), S (Slow)

    Reference direction

    Axial direction of the measurement microphone

    Data output

    Wi-Fi, Bluetooth, RS-485 protocol communication, audio output

    Wi-Fi transmission range

    10 m (range may be reduced depending on ambient signal interference)

    Wi-Fi modes

    AP, STA modes

    Power supply voltage

    5 V–16 V; standard voltage 12 V

    Calibration

    Using a Class 2 or higher sound level calibrator

    Dimensions

    Height 220 mm, diameter 32 mm

    Weighting

    Approx. 130 g

    Operating conditions

    Air temperature: -10°C to +50°C

    Relative humidity: 0% to 90%

    Air pressure: 60 kPa to 108 kPa

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