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iPad Air (4th generation) The iPad Air (4th generation), informally referred to as iPad Air 4, is a tablet computer designed, developed, and marketed by Apple Inc. It was announced by Apple on September 15, 2020. Pre-orders began on October 16, 2020, and shipping began a week later on October 23, 2020 alongside the iPhone 12 and iPhone 12 Pro.
iPad Air (3rd generation) March 18, 2019 iOS 12.2: March 18, 2019 September 15, 2020 Latest iPadOS: Active 5 years, 5 months iPad Air (4th generation) September 15, 2020 iPadOS 14.1: October 23, 2020 March 8, 2022 Latest iPadOS: Active 3 years, 11 months iPad Air (5th generation) March 8, 2022 iPadOS 15.4: March 18, 2022 May 7, 2024 Latest ...
Federal, state, and local municipalities across the United States have adopted the NFPA 72 as a standard in the enforcement of fire code regulation. Municipalities often adopt revisions of the code after years of review and amendments, making many local fire codes specific to their governing authorities. Keeping a thorough record of fire alarm ...
Manual fire alarm activation. An activated manual call point in Japan. Telephone jacks are visible beneath the open cover. Manual fire alarm activation is the process of triggering a fire alarm through a call point, pull station, or other device. This usually causes the alarm to sound the evacuation signal for the relevant building or zone.
The iPad Air (3rd generation)[ 2] (colloquially referred to as iPad Air 3) is a tablet computer developed, and marketed by Apple Inc. It was announced and released on March 19, 2019, alongside the 5th-generation iPad Mini. The device was released five years after the previous iPad Air 2, as the iPad (5th generation) was released in 2017 as the ...
The iPad (4th generation) [15] (marketed as iPad with Retina display, [16] colloquially referred to as the iPad 4) [17] [18] is a tablet computer produced and marketed by Apple Inc. Compared to its predecessor, the third-generation iPad, the fourth-generation iPad maintained the Retina Display but featured new and upgraded components such as the Apple A6X chip and the Lightning connector ...
The iPad Air (retrospectively referred to unofficially as the iPad Air 1 or original iPad Air) is a tablet designed, developed, and marketed by Apple Inc. It was announced on October 22, 2013, and was released on November 1, 2013. Part of the iPad line of tablet computers, the iPad Air features a thinner design than its predecessors, with ...
European Siren for fire detection system. 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 ...