The C 007EN-RF-LED is a boundary layer condenser microphone with an omni-directional polar pattern in satin nickle incorporating Bi colour LED indicators through desk,ceiling or panel mount. It is designed for surveillance in sensitive areas - banks, airports, railway stations, law courts, conference and convention centres. Bi colour LED's give visual indication of when microphone is live. A red/green Bi colour LED is mounted on top of the microphone and includes associated wiring for use with an external switching unit. The microphone is made of a brass construction and is pre-wired with 39”(1 metre) of cable open ended termination. The microphone includes a separate in line screw terminal Phantom Power Adaptor CPPW 01-RF which accepts 9 to 48 volts DC. The phantom power adaptor includes filters which will eliminate all GSM frequencies from 800-1200MHz.