Search results
Results from the WOW.Com Content Network
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 ...
A fire alarm system is a ... The standard fire alarm sound used in most of North America A ... coded appliances that transmit a predetermined pattern, and/or ...
Many fire horn systems were wired to fire pull boxes that were located around a town, and this would "blast out" a code in respect to that box's location. For example, pull box number 233, when pulled, would trigger the fire horn to sound two blasts, followed by a pause, followed by three blasts, followed by a pause, followed by three more blasts.
Commercial smoke detectors issue a signal to a fire alarm control panel as part of a fire alarm system. Usually, an individual commercial smoke detector unit does not issue an alarm; some, however, have built-in sounders. The risk of dying in a residential fire is cut in half in houses with working smoke detectors.
Form and discuss a thorough fire plan with your family, so you know what to do when the fire alarm sounds. Test your smoke alarms monthly: Make a habit of testing your smoke detector once a month ...
A flame detector is a sensor designed to detect and respond to the presence of a flame or fire, allowing flame detection.Responses to a detected flame depend on the installation, but can include sounding an alarm, deactivating a fuel line (such as a propane or a natural gas line), and activating a fire suppression system.
The signal that the alarm has passed: a siren sound with a constant pitch (400 Hz) repeated twice in a row for 30 seconds, with a 30-second pause between the signals (Figure 3). The alarm past signal also applies to the cancellation of the air raid warning and the disaster alarm past signal.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!