This microphone (in combination with the MAT-8000) allows you to put a call out in any zone you wish. Each of the buttons on your ‘private’ base has its own function. The attention signal helps catch everyone’s notice (gong switch 2 to 4 tones). Pull the goose-neck towards you, adjust the volume and address every bystander. The LED light indicates that everything is okay. The MIC-8000A can be linked to the MAT-8000 with a cat 5 cable.