Noise Sensor RS485

The Noise Sensor RS485 is designed for accurate environmental noise monitoring in industrial, urban, and commercial applications. Using a high-sensitivity microphone and advanced signal processing, it provides precise A-weighted sound pressure level (dB(A)) measurements. The RS485 Modbus RTU interface ensures stable and long-distance data transmission, making it ideal for outdoor, smart city, and factory noise monitoring systems.

• Measured Parameter: Sound pressure level (dB(A))

• Measurement Range: 30–130 dB(A)

• Accuracy: ±1.5 dB

• Frequency Range: 20 Hz – 12.5 kHz

• Weighting: A-weighted (human hearing sensitivity)

• Output Interface: RS485 Modbus RTU

• Resolution: 0.1 dB

• Response Time: ≤1 second

• Power Supply: 5–24V DC

• Operating Temperature: -20°C to +60°C

• Humidity Range: 0–95% RH (non-condensing)

•  Communication Settings.

• Modbus Parameters

  Setting	Value
  Server Address (Slave ID)	4 Default
  Function Code	0x03 – Read Holding Registers
  Start Address	0
  Number of Registers	1

  Parameter	Typical Value
  Protocol	Modbus RTU
  Slave ID	4
  Baud Rate	9600 bps
  Data Bits	8
  Parity	None (N)
  Stop Bits	1
  Byte Order	Big-endian (Modbus standard)