Skip to content

WS302 - Sound Level Sensor

The Milesight WS302 is a LoRaWAN sound level sensor with integrated microphone designed for monitoring noise levels in decibels (dB). WS302 can measure a wide range of noise levels from 30 to 120 dBA with ±3 dB accuracy and 0.1 dB resolution. The device supports multiple weighting measurements including A weighting, C weighting, and fast weighting to suit different monitoring scenarios. It can measure various values to accurately judge sound levels: actual value, equivalent continuous value, and maximum value. The sensor features an LED indicator for threshold alarms and provides more than 4 years of battery life. Built-in NFC enables easy configuration, and the device is compliant with standard LoRaWAN gateways and network servers.

Thinger.io Integration

Requirements

A LoRaWAN server is required to communicate the Milesight WS302 into Thinger.io, some options are:

Alongside, the corresponding plugin for the selected LoRaWAN server needs to be installed in your Thinger.io instance.

Get Started

Installation

Look for the plugin in the Thinger.io Plugin Store and install it in your Thinger.io instance. Once the plugin is installed a new Product will be created for this device.

Configuration

The Product is already preconfigured, check that the auto provision prefix matches the one selected in your LoRaWAN server plugin in Thinger.io, or change it to your desire.

Usage

Start sending uplinks for autoprovisioning devices and buckets. This product also provides a predefined dashboard and downlinks.

Device Specifications

  • Measurement Range: 30 to 120 dBA
  • Accuracy: ±3 dB
  • Resolution: 0.1 dB
  • Weighting Types: A weighting, C weighting, fast weighting
  • LoRaWAN Class: Class A
  • Activation Mode: OTAA/ABP
  • Tx Power: 16 dBm (868 MHz) / 22 dBm (915 MHz) / 19 dBm (470 MHz)
  • Sensitivity: -137 dBm @ 300 bps
  • Battery Life: More than 4 years
  • Configuration: Built-in NFC
  • LED Indicator: Threshold alarm indication
  • Operating Temperature: -20°C to 60°C
  • Enclosure: IP30
  • Dimensions: 68 x 20.5 x 65 mm

Use Cases

  • Office and workplace noise monitoring
  • Industrial environment sound level compliance
  • Smart building acoustic management
  • Environmental noise pollution monitoring
  • Noise regulation compliance verification
  • Public space sound level tracking

Additional Resources

Milesight resources can be found at: