<ul><li>Up to 4 messages, or 2 voice + 2 siren</li><li>On-board microphone</li><li>24W Audio Alifier with volume control</li><li>One shot & repeat modes of playback</li><li>Line level and speaker outputs</li></ul><br><br>......

ELK-120 4-Channel Recordable Voice and Siren Driver

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