The C 31ES-RF is a gooseneck cardioid microphone fitted with silent operation reed switch and micro LED indicator, Male 3 Pin XLR termination, 200mm long in satin black. It is designed for use in conference halls, places of worship, broadcasting and paging systems. 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 or 8.5mm flexible or semi-rigid 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 3 pin XLR. A magnetic reed switch is fitted to the microphone for pop / click free on/off operation.