Hörmann ECL All Signals (Custom)

The Hörmann ECL was the first ever electronic siren made by HÖRMANN Warnsysteme GmbH, in 1977, Hörmann Entwicklungs GmbH was founded as the first software company from Hörmann Gruppe, experimenting with microchips. In 1977-1978 Hörmann Warnsysteme made a siren using EPROM microchips, that saved the signals for reproducing them by analog drivers, Hörmann based on the HLS-273 design, with a hat for protecting the drivers.