The CRM 102-RF is a retractable through-table cardioid condenser boundary layer microphone with standard finish black nextel. It 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 Clockaudio MR88 electronic mixer can be used to mute CRM microphones without the use of a costly DSP by using the “Control input facility”. Led indication of mic Live or muted can also be provided by using the MR88 “Active control output” facility.