The CRM 102N-RF is a low profile retractable through table boundary microphone with cardioid polar pattern in satin nickel. It is designed for superior quality voice reproduction required in venues such as boardrooms,conferencing,court rooms and other such venues. The microphone has a unique ability to retract and lock the capsule module away from sight leaving only 3 mm (0.12”) protruding on top of the table. The microphone is of a robust brass construction and includes 2 metres (6.6ft) of cable. Included is an integral phantom power module which is to be powered by 9 to 48 volts. The phantom power module also includes filters which will eliminate all GSM frequencies from 800-1200 MHz.