The DGL-MIC is an ultra sensitive flush-mount noise sensing microphone, providing hands-free Full Duplex intercom for Octo Jr audio system from Xavtel, or it can act as a noise sensing microphone to detect the background noise and automatically adjust the speaker level for BOUTIQUE PA/VA system or UAP G3 Universal Audio Processor. The maximum communication length is 250 m via STP CAT5/6 cable with shielded RJ45 connector.