The Thunderbolt, a famous electro-mechanical outdoor warning siren manufactured between 1952 – 1990. It was originally designed during the Cold War for air-raid warnings and later repurposed as a multi-purpose disaster and tornado siren.
The Thunderbolt, a famous electro-mechanical outdoor warning siren manufactured between 1952 – 1990. It was originally designed during the Cold War for air-raid warnings and later repurposed as a multi-purpose disaster and tornado siren.