Description Open Box Item, Unit has not been terminated to a connector. The Model 522 is a dynamic base station microphone designed especially for radio communications, paging, and dispatching systems. Its cardioid (unidirectional) pickup pattern suppresses unwanted background noise – the type of noise generated by other dispatchers working nearby, by ventilating equipment, or by office machines in the same area. It also eliminates or reduces feedback in public address paging applications. Dual impedance (19 to 300 ohms or High) Impedance change switch for convenient change-over Finger-tip control bar (locking or non-locking action) to actuate microphone circuit and an external relay or control circuit Long-life switch to satisfy rigorous requirements of communications and paging systems Sturdy, high impact ARMO-DUR® base and microphone case Adjustable microphone height Dependability – under all operating conditions Conversion kit available for Monitor/Transmit switching Two-tone gray ARMO-DUR with dull-chrome-plated steel screen
