The Netherlands

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Ooy, Zevenaar's MOD2008 The Netherland's siren system comprimises of Federal Signal Modulator 1004s and 2008s. There are around 4,200 sirens intalled in Holland. The country tests its sirens on the first Monday of the month at noon (12.00pm) and lasts 1 minute and 26 seconds. The Modulators in Holland are quite unique, utilizing a custom wailing tone on their MCs/MCPs, it is unknown wether this is their only tone or not. Charlois, Rotterdam's MOD1004

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