The message "This is an important message" in international Morse (sound) alphabet. the Morse is formed of "dit" and "dah" (of points and features). 1 "dah" equals 3 "dit". The spaces between the letters are equivalent to 1 "dah". Ends with a space between the words equivalent to 7 "dit". Realized on a computer with a triangular wave of 1 010 Hz. For more information on Morse: en.wikipedia.org/wiki/Morse_code. UCS Category: COMTelm. Duration: 00:23.
End of a 35mm film rewind: Rewind and end (Sound: Left side of the dispenser (full spool)). Can synchronize its 0076. UCS Category: COMAv. Duration: 01:03.
Cinema projector (35mm Kinoton, FP30) without fan or lamp: Getting Started, then roullage extinction (Sound: Before mechanism). Can synchronize its 0070. UCS Category: COMAv. Duration: 00:41.