The C 31E-RF-Halo is a flexible cardioid microphone fitted with high brightness LED halo and a integral PPA, terminating in a Male 5 Pin XLR, 200mm long in satin black. The Cardioid Condenser Microphones designed for use in conference halls, places of worship, broadcasting and paging systems. High brightness LED halo gives easy visual indication of person talking. The Electret condenser gooseneck microphone has a cardioid polar pattern and slimline profile design. The microphone is constructed from high quality brass construction using either an 8 flexible shaft. The microphone is fitted with a phantom power adaptor accepting 9 to 48 volts DC and has an impedance of 200 Ohms. The phantom power adaptor also includes filters which will eliminate all GSM frequencies from 800-1200 MHz and is terminated with a male 5 pin XLR.