The C 015E-RF is a desk mounted boundary layer electret condenser microphone with Omni-Directional polar pattern and fully programmable touch pad in satin black. Red led shows when Microphone is live. Contains an in built Phantom Power module which requires power from an external 48 Volt Phantom supply. A 5 pin female socket mounted on the rear of the product is provided for output connection. Fully protected against RF interference which will eliminate all GSM frequencies from 800-1200 MHz.