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The wireless and hardwired speakers and siren systems produce tone alerts and voice announcements that can be understood clearly in emergency outdoor situations. Class-D amplifiers produce louder sounds with less power. Pre-recorded or live announcements can be broadcast throughout a campus or facility through a computer interface. The systems use time-stamped communications and frequency-shift-keying modulation to prevent unauthorized users. The notification setups are suited for military, university, government, institutional, commercial and community properties.

Gamewell-FCI, Northford, Conn.
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