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2. Emergency light - Wikipedia

   en.wikipedia.org/wiki/Emergency_light

   A hallway under regular lighting (left) and emergency lighting (right) US-style emergency lighting fixture. An emergency light is a battery-backed lighting device that switches on automatically when a building experiences a power outage. In the United States, emergency lights are standard in new commercial and high occupancy residential ...

3. Bulkhead - Wikipedia

   en.wikipedia.org/wiki/Bulkhead

   Torpedo bulkhead, a type of armor plate or protective covering designed to keep a ship afloat even if the hull is struck by a shell or by a torpedo; Bulkhead (barrier), a retaining wall used as a form of coastal management, akin to a seawall, or as a structural device such as a bulkhead partition

4. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

5. The American Airlines collision is a rare incident for an ...

   www.aol.com/finance/american-airlines-collision...

   An American Airlines plane collided with an Army helicopter near Washington D.C in a rare mid-air crash.The company has a strong safety record. There has not been a midair collision like this ...

6. Emergency vehicle lighting - Wikipedia

   en.wikipedia.org/wiki/Emergency_vehicle_lighting

   Emergency vehicle lighting, also known as simply emergency lighting or emergency lights, is a type of vehicle lighting used to visually announce a vehicle's presence to other road users. A sub-type of emergency vehicle equipment , emergency vehicle lighting is generally used by emergency vehicles and other authorized vehicles in a variety of ...

7. Fire alarm control panel - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_control_panel

   Coded panels were the earliest type of central fire alarm control, and were made during the 1800s to the 1970s. A coded panel is similar in many ways to a modern conventional panel (described below), except each zone was connected to its own code wheel, which, depending on the way the panel was set up, would either do sets of four rounds of code until the initiating pull station was reset ...