Commonly used to provide welcoming messages at building entrances, to protect emergency doors in shopping centres/hospitals/public buildings, to deter would-be intruders in security applications or to trigger alarm/warning messages at construction sites and other hazardous areas.
A horn-type speaker with built-in microphone which requires a N.O. input to trigger the playback of your recorded message.
A sensor speaker designed to play your recorded message when its integrated 12m / 40ft PIR detects movement of people or vehicles.
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