CO2 and sound sensor

Sound Level Sensor WS302

The WS302 is a LoRaWAN® sound level sensor with an integrated microphone. It is designed to measure a wide range of noise levels and send various noise level values via LoRaWAN® network. It supports multiple weighting measurements for different application scenarios.


  • Wireless Transmission Technology: LoRaWAN®
  • Frequency: Supports multiple bands including CN470, EU868, US915
  • Measurement Range: 30 dBA to 120 dBA
  • Accuracy: ±3 dB (0°C to +45°C)
  • Power Supply: 2 × 2700 mAh ER14505 Li-SOCl2 replaceable batteries
  • Battery Life: Over 4 years (with fast time weighting disabled)
  • Operating Temperature: -20°C to +60°C
  • Ingress Protection: IP30
  • Dimensions: 68 × 65 × 20.5 mm


Summary: The WS302 Sound Level Sensor is a versatile and reliable device, ideal for smart cities, schools, and health monitoring. It offers accurate noise level measurement with long battery life and easy remote management, suitable for diverse environments.