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A Wheelock AS horn/strobe. In 1995, Wheelock introduced the AS, a combination horn and strobe. The AS was first created with a vertical position strobe on the right side of the horn, except for 110 candela models, which used a horizontal strobe. In 1997 when the NS was introduced, the strobe on all AS models was moved to the horizontal position.
Meanwhile, in 1976, Wheelock introduced the first horn/strobe notification appliances with its 7000 series. The majority of visual signals throughout the 1970s and 1980s were white or red incandescent lights. In the 1980s, most new installations began to include visual signals, and more strobes started to appear.
A fire alarm horn strobe (top), remote annunciator (middle) and pull station (bottom), connected together in a fire alarm system A fire alarm notification appliance as widely used under North American standards
The SpectrAlert series included horn strobes, strobes, remote horns, chimes, chime strobes, speakers, and speaker strobes. A main feature of these alarms was the ability to sync them using a System Sensor MDL sync module or the System Sensor sync protocol on a supported fire alarm control panel .
Around this time, Faraday began producing notification appliances, such as bells, horns, buzzers, etc. They also rebranded coded fire alarm stations from Holtzer-Cabot . From the 1930s to the 1960s, Faraday was known as " Sperti -Faraday", and the company moved to Adrian, Michigan . [ 1 ]
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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 ...
Allen and Wheelock pocket rimfire Side Hammer revolvers in .32 and .22 caliber rimfire.22 caliber rimfire revolver. This is the first cartridge revolver made by Allen and Wheelock, and one of the first cartridge revolvers from any manufacturer (competing with the Smith and Wesson model 1).