The CS2-RF is a boundary layer dual element condenser microphone with a half cardioid polar pattern in black nextel. Minimise the number of microphones on the conference table whilst maintaining high performance and ease of installation. Boundary Layer Microphone with a half cardioid polar pattern. Designed to be placed in the middle of the conference table, with the participants facing the condenser element. Inbuilt Phantom Power Module. The microphone is made from solid brass and capable of being permanently mounted with the use of an M 10 x 1 hollow bolt, nut and washer. The microphone is fitted with a 6.6 ft (2 Metres) 4 core + ground cable with open-ended termination. Also included are three integral phantom power adaptors that accepts 9 to 48 volts DC. The phantom power adaptor includes filters which will eliminate all GSM frequencies from 800 MHz - 1.2 GHz.