Indoor Noise Sensor, 4-20mA/RS485 Output

Wall-mounted indoor noise sensor from SUCH measures 30-120dB, with a frequency response covering 20 Hz to 12.5 kHz and a measurement accuracy of ±0.5 dB, accurately monitoring changes in ambient noise. The sensor supports RS485 (Modbus RTU protocol) and 4-20mA signal output for easy system integration and remote monitoring. It features a high-sensitivity condenser microphone and a high-protection-level housing, ensuring stable operation in environments ranging from -20℃ to 60℃ and 0-80%RH. Its wall-mounted design makes installation simple and suitable for noise monitoring and management in homes, offices, schools, and various indoor environments.

Feature

• Wide Measurement Range: Measurement range of 30–120 dB with excellent linearity and accurate, stable measurement.
• High Sensitivity Detection: Employs a condenser microphone for stable signal and high detection accuracy.
• High Protection Design: IP65-rated housing, waterproof, dustproof, and moisture-proof, effectively protecting internal circuitry.
• Easy Installation: Wall-mounted design with mounting holes on both sides, saving space and facilitating installation.
• Diverse Communication: Supports multiple signal outputs, communication distance up to 2000 meters, compatible with Modbus-RTU protocol, and flexible address and baud rate settings.

Structure & Connection

Noise Decibel Reference