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2. Smoke detector - Wikipedia

   en.wikipedia.org/wiki/Smoke_detector

   Residential smoke alarms are usually powered with a 9-volt battery, or by mains electricity. Some smoke alarms use a combination of the 2; usually using a battery as an extra power source in the event of an outage. Commercial smoke detectors issue a signal to a fire alarm control panel as part of a fire alarm system. Usually, an individual ...

3. Here's Everything You Need to Know About Smoke Alarms - AOL

   www.aol.com/lifestyle/heres-everything-know...

   When your smoke detector beeps, don't assume that it needs a new battery. Here's a few things you can do to turn off smoke alarms and get it in working order.

4. First Alert - Wikipedia

   en.wikipedia.org/wiki/First_Alert

   The three-man team (Burke-Roberts-Kimberlin) invented the first battery-powered smoke detector [3] [4] 1964- Began commercial manufacturing of the first battery-powered smoke detector; 1967- Pittway began manufacturing the alarms; 1974-Sears begins selling the BRK model SS-74R battery powered smoke alarm; 1992-Sold to T.H. Lee & Associates

5. Fire alarm system - Wikipedia

   en.wikipedia.org/wiki/Fire_alarm_system

   The batteries can be either inside the bottom of the panel or inside a separate battery box installed near the panel. Initiating devices: These components act as inputs to the fire alarm control unit and are manually or automatically activated. Examples include pull stations, heat detectors, duct detectors, and smoke detectors.

6. Kidde - Wikipedia

   en.wikipedia.org/wiki/Kidde

   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]

7. Faraday (company) - Wikipedia

   en.wikipedia.org/wiki/Faraday_(company)

   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 ] From the late 1960s up until present, many companies rebranded Faraday's popular line of notification appliances, including Simplex , Standard Electric Time ...