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A fire alarm notification appliance is an active fire protection component of a fire alarm system. A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire or other emergency condition requiring action. Audible appliances have been in use longer than any other method of notification.
In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens. Alternatively, sirens may be used if necessary ...
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3 APEX (f/2.83) Metering mode: Pattern: Light source: Unknown: Flash: Flash did not fire, compulsory flash suppression: File source: Digital still camera: Scene type: A directly photographed image: Custom image processing: Custom process: Exposure mode: Auto exposure: White balance: Auto white balance: Digital zoom ratio: 0: Focal length in 35 ...
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