The model BM 3022 features gooseneck microphone with hi-quality unidirectional electret capsule. Direct connection to power amplifiers input through CAT5 cable. Adjustable line output with RJ45 connector. Switchable automatic gain control (AGC). Up to 30 BM 3022 paging microphones can be linked in a 'daisy-chain'. Selectable mixing, interlocking or priority mode among devices. When activating a microphone, the announcement can be preceded by a chime. Applicable for speech, announcement, communication and conference