Audible Alarms
Pfannenberg offers a complete spectrum of audible signaling devices. Click the appropriate image below to learn more.
Sounders |
Sounders are tone generators that output an audible signal when a voltage is applied to their input power terminals. Sounders are self-generating - meaning that the tones are pre-programmed into their circuitry and the sound is simply emitted when power is supplied. Sounders are widely used for generating evacuation alarms in the event of fire, toxic gas leak, or chemical spill. Other applications for sounders include machinery start-up alarms, back-up warning systems, process upset signals, heavy equipment movement, moving roof systems, crane movement, and movement of doors, gates, and barriers. Sounders typically generate a variety of tones that can be user-selected. Some units are capable of delivering multiple tone stages. For example, one tone stage may signal evacuation, while a secondary tone stage may signal "all clear" or OK to return. |
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Voice Sounders |
Voice sounders combine tone generation with speech reproduction to provide personnel with spoken messages regarding the purpose of the alarm. Voice sounders may be programmed by an internal microphone or synchronization module that serves to copy a pre-programmed message to multiple devices. |
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Loudspeakers |
Loudspeakers are acoustic transducers that convert audio signals of speech, music, and tone into audible sound pressure waves. Loudspeakers are commonly used with public address systems and other types of warning systems. |
