Sound Level Sensor : WS302 | Milesight

The WS302 is a LoRa sound level sensor with an integrated microphone, capable of measuring a wide range of noise levels and sending various values via the LoRaWAN network. It is ideal for smart buildings, smart cities, schools, health monitoring, and more.

Advantages :

• Supports multiple weighting measurements for different scenarios
• Accurate measurement of sound levels
• LED indicator for threshold alarms
• More than 4 years of battery life
• Easy configuration with built-in NFC
• Compatible with standard LoRaWAN® gateways and network servers
• Quick and easy management with the Milesight IoT Cloud solution

Main Features :

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

Measurements

• 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
• Button: 1 × Power/Reset Button
• LED: 1 × Status/Alarm Indicator

Physical Characteristics

• Power Supply: 2 × 2700 mAh ER14505 Li-SOCl2 Replaceable Batteries
• Battery Life*: Over 4 Years (Fast time weighting disabled), Over 1.5 Years (Fast time weighting enabled)
• Operating Temperature: -20°C to +60°C
• Relative Humidity: ≤95% (Non-condensing)
• Ingress Protection: IP30
• Dimensions: 68 × 65 × 20.5 mm (2.68 × 2.56 × 0.81 in)
• Material & Color: PC+ABS, White
• Installation: On flat surfaces with screws or 3M tapes

* Tested under laboratory conditions and for guideline purposes only.

Applications :

• Smart buildings
• Smart cities
• Schools
• Health monitoring