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A vintage intercom system / doorphone used at home or office, likely one of the first models featuring a video connection in black and white. From the 70s or early 80s. The speaking button is pressed with a very distinctive sound, some low volume static, then the connection is lost. Stereo. Keywords: interphone system inter phone intercom com safety domestic home office house retro vintage 70s 80s 60s model type button press pressed pressing push click feedback electronic electronical duplex circuit use talk back scifi sci-fi science fiction doorphone
Price: USD $2.45 For use in all media, in perpetuity, throughout the world and Universe