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Reduces High Grade Ten pulses per second condenser mic “hollow Components Desk or Wall Tone/Pulse barrel” sound of Maintain high DTMF Rate Mountable Switchable Dialing flat designs. performance over Eight digits per second • Allows touch-tone and time with high-grade Handy Index of pulse dialing Contoured Earpiece electrolytic capacitors, Make/Break Ratio Memory Numbers • Allows any combination Blocks out long-life micro switches, 61/39 in Base of tone and pulse for distracting nois