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First Alert is the retail brand of American safety equipment manufacturer BRK Brands, Inc., [1] established in 1976 and based in Aurora, Illinois, with a production plant in Juarez, Mexico. Products sold with the brand include carbon monoxide detectors, smoke alarms , fire extinguishers , and other safety products like flashlights and fire ...
The LH-16 was the first in the series of the Little L-Per line, and has now been discontinued, having been replaced by the LL-16 model. It uses a two-element yagi antenna, with a crystal oscillator-controlled double-conversion receiver, and may be attached to antennas for external use on aircraft or vehicles. On the face of the device there is
Kidde (/ ˈ k ɪ d ə / [2]) is an American multinational company that manufactures and distributes fire detection and suppression equipment, as well as smoke and CO alarm units. Kidde is one of America's largest manufacturers of smoke alarms [3] [4] and fire safety products. [5]
The first automatic electric fire alarm was patented in 1890 by Francis Robbins Upton, [2] an associate of Thomas Edison. [3] In 1902, George Andrew Darby patented the first European electrical heat detector in Birmingham, England. [4] [5] In the late 1930s, Swiss physicist Walter Jaeger attempted to invent a sensor for poison gas. [6]
In 1970, Space Age Electronics introduced the first visual notification appliance, the AV32 light plate (which was installed over an existing horn) and V33 remote light. 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 ...
First Warning is a severe weather warning system designed for broadcast television stations, typically those in the United States. A weather advisory product based on First Warning, called First Alert, is an automated version of this product, which has come into widespread use by television stations and is marketed under different names depending on the graphics service vendor.