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Plantronics SHS1890-10 PTT amplifier with carbon type microphone amplifier, PJ-7 connector, and selectable switch operation (momentary or locking modes). Compatible with H-Series headsets.
The Plantronics SHS1890 is a 2-prong, 6-wire, pistol grip amp, with a 10 foot cord and is equipped with a push-to-talk button that can be adjusted with a screwdriver to be either lockable or non-lockable. When the button is depressed or locked in the ON position, the microphone is turned on and will transmit your voice.
Simply plug into the appropriate jack in your station or jackset. The Plantronics SHS1890-10 PTT amplifier is universal and may be positioned so that either side is visible.
Lockable position: Note that the selector slot is aligned vertically. The push-to-talk button can be depressed momentarily or locked in the ON position by first depressing then sliding the button until it locks.
Non-Lockable position: Turn the selector horizon-tally. The push- to-talk button can be depressed momentarily when you wish to speak.
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