The mechanical alarm clock of the brand Kaiser from the 1930s was a mass-produced article and predominantly used in private households. It is now part...
The fire department bell is a component of a two-axled fire engine from the end of the 19th century. It was used to signal the right of way acoustically...
TThe tone sequence siren (German: Martinshorn) is a component of the fire engine/water tanker Magirus F Mercur 125, built in 1961. The vehicle was originally...
The tone sequence siren (German: Martinshorn) from around the year 2010 is a component from a patrol car of the city of Essen police department. In combination...
The tone sequence siren (German: Martinshorn) from around the year 2010 is a component from an unmarked police car of the city of Essen police department....
The tone sequence siren (German: Martinshorn) from around the year 2010 is a component from an unmarked police car of the city of Essen police department....
Before this police whistle from the 1980s was included in the historical collection of the Essen police, it had long been an integral part of the police...
The signal horn from the 1950s was part of the work equipment used by a shunter for the industrial railway at the Henrichshütte Ironworks in Hattingen....
The signal horn (train horn) is a component of a Kleinlocomotive of the DB-production series 332, built in 1966 by Orenstein & Koppel. The locomotive performed...
The signalling whistle from the 1950s was part of the work equipment used by a shunter for the industrial railway at the Henrichshütte Ironworks in Hattingen....
The electric siren Elektror S0 KB from the 1960s was in use as a factory siren until the 1990s. It was used to alert personnel when machines were starting...
The steam whistle of the steamboat “Nixe” from the year 1939 served as a means of communication through acoustic signals for the inland shipping industry....
