The palm held microphone Series is designed for sound installations. The frequency response, especially tailored for voice communications, provides a crisp, clear, highly intelligible sound. The ergonomic teardrop Housing is tough and the transducer resists atmospheric extremes. The palm held Series have low-impedance output and is factory wired normally open. High-cycle dpdt switch mutes the microphone and produces an external contact closure. 6' heavy-duty coiled cord is stripped and tinned.