WS302

In Stock

Sound Level Sensor

Accurate LoRaWAN noise monitoring with A and C weighting and up to 5 years of battery life.

Features

  • Wide-range noise measurement
  • A and C frequency weighting (switchable)
  • SPL actual, Leq and Lmax values
  • LED threshold-alarm indicator
  • One-touch NFC configuration
  • Battery life up to 5 years
  • LoRaWAN and Milesight ecosystem

Hardware

  • Range 30 – 120 dBA / 35 – 120 dBC
  • Accuracy ± 3 dB, resolution 0.1 dB
  • Frequency range 30 Hz – 8 kHz
  • 2 Ă— ER14505 batteries
  • 68 Ă— 65 Ă— 20.5 mm
  • IP30, wall or 3M tape mount

Applications

Smart buildings, smart cities, schools, healthcare, commercial spaces.

Request a Quote for a Product

Request a Quote for a Product

    Description

    WS302 Description

    Overview

    The WS302 is a LoRaWAN sound level sensor with an integrated microphone. It measures a wide range of noise levels and reports several noise values over LoRaWAN, helping teams monitor and manage acoustic comfort.

    Accurate Measurement

    The WS302 covers 30 to 120 dBA and 35 to 120 dBC with ± 3 dB accuracy and 0.1 dB resolution across a 30 Hz to 8 kHz range. It reports SPL actual, equivalent continuous (Leq) and maximum (Lmax) values.

    Flexible Weighting

    Software-switchable A and C frequency weighting plus fast time weighting let the sensor suit different scenarios, from general comfort monitoring to peak-noise detection.

    Alarms

    A built-in LED indicator flags threshold alarms locally, while LoRaWAN delivers data to the platform for trends, reporting and automated triggers.

    Power

    Two ER14505 batteries give up to 5 years of operation with fast weighting disabled, so the sensor runs for years without wiring or frequent maintenance.

    Setup

    One-touch NFC configuration through the Milesight ToolBox app makes setup quick. Mount it on flat surfaces with screws or 3M tape.

    Industry Applications

    WS302 Industrial Applications

    Smart Buildings

    Offices and shared spaces monitor noise for comfort and productivity. Threshold alarms flag disruptive levels for quick response.

    Smart Cities

    Streets and public areas track environmental noise for planning and compliance. LoRaWAN gives wide, low-power coverage across the city.

    Education

    Schools and libraries keep noise within healthy levels for learning. Long battery life keeps every unit running with minimal upkeep.

    Healthcare

    Hospitals and care homes watch noise to protect rest and recovery. Accurate weighting suits sensitive monitoring environments.

    Specifications

    Wireless Transmission

    Technology LoRaWAN®
    Antenna Internal antenna
    Frequency CN470/IN865/RU864/EU868/US915/AU915/KR920/AS923-1&2&3&4
    Tx Power 16 dBm (868 MHz) / 22 dBm (915 MHz) / 19 dBm (470 MHz)
    Sensitivity −137 dBm @300bps
    Mode OTAA/ABP Class A

    Measurement

    Range 30 dBA ~ 120 dBA, 35 dBC ~ 120 dBC
    Accuracy ± 3 dB (0 ~ +45 °C)
    Resolution 0.1 dB
    Frequency Range 30 Hz ~ 8 kHz
    Frequency Weighting A and C weighting (software switchable)
    Time Weighting Fast weighting
    Measurement Unit SPL actual, Leq, Lmax

    Interface & Software

    Button 1 × power / reset button
    LED 1 × status / alarm indicator
    Power On/Off Mobile app via NFC or power button
    Configuration Mobile app via NFC or downlink
    Advanced Feature Threshold alarm

    Physical Characteristics

    Power Supply 2 × 2700 mAh ER14505 Li-SOCl2 replaceable batteries
    Battery Life ~5 years (SF7, fast weighting off); ~1.7 years (SF7, fast weighting on)
    Operating Temperature −20 °C ~ +60 °C
    Relative Humidity ≤ 95% (non-condensing)
    Ingress Protection IP30
    Material & Color PC + ABS, white
    Weight 79.1 g (batteries included)
    Dimensions 68 × 65 × 20.5 mm
    Installation Flat surface via screws or 3M tape

    Approvals

    Regulatory CE, FCC, Telec
    Environmental RoHS
    Order Codes

    Order Codes

    SKU: WS302

    WS302 – LoRaWAN sound level sensor with A/C weighting and SPL/Leq/Lmax values (specify frequency band: EU868, US915, AS923, etc.)

    Order by referencing the SKU – contact info@easynt.com

    Scroll To Top
    Close
    Close