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Coded pulls were typically used in new fire alarm systems until roughly the 1950s, and then occasionally into the 1970s. Until the early 1990s, some panels were made with an extra zone to accommodate any existing coded pull stations. Nowadays, coded pull stations are rarely seen in working fire alarm systems.
A fire alarm box, fire alarm call box, or fire alarm pull box is a device used for notifying a fire department of a fire or a fire alarm activation. Typically installed on street corners or on the outside of commercial buildings in urban areas, they were the main means of summoning firefighters before the general availability of telephones.
By 1973, the company had grown substantially, and moved into a new 50,000-square-foot (4,600 m 2) building. [1] Fire-Lite was the first company to introduce a compact, inexpensive addressable fire alarm control panel. [2] Some of their recognizable products include the Fire-Lite BG-10 pull station, introduced in 1983, and the newer BG-12 pull ...
New codes and standards introduced around 2010, especially the new UL Standard 2572, the US Department of Defense's UFC 4-021-01 Design and O&M Mass Notification Systems, and NFPA 72 2010 edition Chapter 24, have led fire alarm system manufacturers to expand their systems voice evacuation capabilities to support new requirements for mass ...
A Knox Box is a small, wall-mounted safe that holds building keys for fire departments, emergency medical services, and sometimes police to retrieve in emergency situations. [ 1 ] [ 2 ] The term "Knox-Box" is a brand name for such products produced by the American company Knox Associates, which does business as The Knox Company.
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 ...
Around 1976, Wheelock created the 7001 (2-wire, flush-mount DC), 7002 (2-wire, surface-mount DC), 34+WS (4-wire, surface-mount DC), and 7004 (2-wire, surface-mount AC) electromechanical horn/strobes. These were the first fire alarm signals to use xenon strobes instead of incandescent lights. The signals either had pigtail leads or screw ...
The NFPA 72 "covers the application, installation, location, performance, inspection, testing, and maintenance of fire alarm systems, supervising station alarm systems, public emergency alarm reporting systems, fire warning equipment and emergency communications systems (ECS), and their components."