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The standard fire alarm sound used in most of North America. Coding refers to the pattern or tones a notification appliance sounds in and is controlled either by the panel or by setting jumpers or DIP switches on the notification appliances. The majority of audible notification appliances installed prior to 1996 produced a steady sound for ...
Decoders at relay stations would sound an alarm, alerting station personnel to the incoming message. Then, each relay station would broadcast the alert tone and rebroadcast the emergency message from the primary station. The Attention Signal was developed in the mid-1960s.
A PASS device (personal alert safety system), also known as a distress signal unit (DSU) or ADSU (automatic distress signal unit), is a personal safety device used primarily by firefighters entering a hazardous or "immediately dangerous to life and health" environment such as a burning building.
Set to be tested on 4G and 5G mobile phones this afternoon, the sound and vibration of the emergency alert will last for up to 10 seconds even if devices are set to silent.
PulsePoint is a 911-connected mobile app that allows users to view and receive live alerts of calls being responded to by fire departments and emergency medical services.The app aims to have bystanders trained in CPR help cardiac arrest victims before emergency crews arrive, which can increase their chance of survival.
The user must be cautious, however, as setting the alert tone duration too high may cover some voice information. Also, some units may have the volume knob set to control the sound output of the audible alert as well. The user may have the volume turned down to an undetectable level either by accident or by carelessness, thus missing the page.
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