LoRaWAN® Sound Level Sensor
WS302
Accurate Sound Level Measurement
LED Alarm Indicator
1.5~4 Years Battery Life
Easy Configuration (via NFC)
Fight Against Uncomfortable Noise
Monitor Sound Level with Ease
WS302 is an advanced LoRaWAN® Sensor for monitoring noise/sound level in decibels (dB) with ease.
- 30 to 120 dBA Measurement Range
- ± 3 dB Accuracy; 0.1 dB Resolution
- A-Weighting, C-Weighting & Fast-Time Weighting
- Measurement Unit: SPL Actual, Leq, and Lmax
A & C Weighting as Needed
Choose A-weighting or C-weighting based on scenarios. Usually, A-weighting is appropriate for quiet environments while C-weighting is for noisy environments.
Fast-Time Weighting
Fast-time weighting uses a time constant of 125 milliseconds for measuring unstable noise with large fluctuations.
Fast weighting is turned off by default. When turned on, battery life will be shortened.
More Sound Levels for
more Insight
Support reporting of three sound level values (maximum sound level, sound pressure level, and equivalent continuous sound level) based on different weighting methods.
Dainty as Always
Blend into any Interiors
Fight Against Uncomfortable Noise
Minimalistic and modern design makes it ideal for classrooms, workplaces, hotels, hospitals, etc. WS302 is an unnoticed guard for eliminating noise pollution.
LoRaWAN® Based
Milesight Sound Level Sensor is compatible with industry-standard LoRaWAN® gateways with a range of up to 15 km in rural areas and 2 km in urban areas.
Milesight IoT Cloud
Compatible with Milesight IoT Cloud and view sound level at your fingertips.
Long Battery Life
Easy Configuration
1st Step
Install the Milesight ToolBox
2nd Step
Enable NFC and run ToolBox,
then attach your phone to the device
3rd Step
Verify the password
and start configuring
Flexible Installation
Screw Mounting
Double Sided Tape Mounting
Specifications | Documents
| Wireless Transmission | Technology | LoRaWAN® |
| 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 to 120 dBA, 35 dBC to 120 dBC |
| Accuracy | ± 3 dB (0°C to +45°C) | |
| Resolution | 0.1 dB | |
| Frequency Range | 30 Hz to 8 kHz | |
| Frequency Weighting | A and C Weighting (Software Switchable) | |
| Time Weighting | Fast Weighting | |
| Measurement Unit | SPL Actual, Leq, Lmax | |
| Others | Configuration | NFC |
| Button | 1 × Power/Reset Button | |
| LED | 1 × Status/Alarm Indicator | |
| Physical Characteristics | Power Supply | 2 × 2700 mAh ER14505 Li-SOCl2 Replaceable Batteries |
| Operating Temperature | -20°C to +60°C | |
| Relative Humidity | ≤95% (Non-condensing) | |
| Ingress Protection | IP30 | |
| Dimension | 68 × 65 × 20.5 mm (2.68 × 2.56 × 0.81 in) | |
| Material & Color | PC+ABS, White | |
| Installation | On the flat surfaces with screws or 3M tapes |
