HN-D32N Noise Detector is designed to collect ambient noise samples and transmit them to the control system. The system can then automatically adjust the volume to deliver intelligible sound. It is intended for use in areas such as metro station, airport, and shopping mall, where noise level varies constantly and sound clarity is of utmost importance.
Features & Benefits:
– Collect ambient noise from the built-in microphone
– Elegant appearance
– Easy field installation with spring-loaded clips
– 2-core shielded cable
– Transmission distance > 200 meters