This is an unflown example of a control unit that was installed in the cockpit of a commercial aircraft, by which the crew activated the Cockpit Voice Recorder (CVR). The operation of the CVR was out of the crew's control, but at the conclusion of a flight, they had the option of erasing whatever sounds had just been recorded. If they did not, the sounds would be overridden on the next flight anyway.
Gift of Loral Data Systems.
rectangular box attached to brown mounting face plate equipped with area microphone and control functions.