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A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors . PIR sensors are commonly used in security alarms and automatic lighting applications.
The most common use of a pull switch is to operate a ceiling electric light.The ceiling fan and mechanical wall fans are also appliances often operated by pull switches. . Pull switches may be either two-position (open or closed) or multi-position (allowing for different fan speeds or levels of illuminati
The Copper Harbor Front Range Light is in Copper Harbor, Michigan. [1] While the Copper Harbor Light effectively illuminated the area of the harbor, it failed to guide mariners through the narrow opening of rocks at its entrance. [2] Construction on the range lights were completed in 1869.
The Erie Harbor North Pier Light, also known as the Presque Isle North Pier Light, is one of the three lighthouses near Erie, Pennsylvania in the United States. The light, situated at the far eastern end of Presque Isle State Park , helps mariners as they traverse the narrow inlet between Lake Erie and Presque Isle Bay .
Location: approaches to Green Bay, Wisconsin harbor: Coordinates: 1]: Tower; Constructed: 1935 [2]: Foundation: Concrete pier: Construction: Steel plate: Automated: 1979 [2]: Shape: white conical tower on cylindrical base: Light; Focal height: 72 feet (22 m): Lens: fourth order Fresnel lens: Range: 12 nautical miles (22 km; 14 mi): Characteristic: occ. red 4s: The Green Bay Harbor Entrance ...
"Harbour Lights" (song), a 1937 song by Hugh Williams (pseudonym for Will Grosz) with lyrics by Jimmy Kennedy; Harbor Lights (Bruce Hornsby album), 1993; Harbor Lights (Cristy Lane album), 1985 "Harbor Lights", a track from the 1976 Boz Scaggs' album Silk Degrees "Harbour Lights", a track from the 2012 A Silent Film album Sand & Snow
The Bridgeport Harbor Light, later the Bridgeport Harbor Lighthouse, was a lighthouse in Bridgeport, Connecticut, United States. It is located on the west side of the Bridgeport Harbor entrance and the north side of Long Island Sound. Originally constructed in 1851 and rebuilt in 1871 with a dwelling, it had a red-fixed light throughout its ...
On November 15, 1926, the new Harbor of Refuge light was established. This new cast-iron structure was designed to endure the most intense of Atlantic storms. The current structure of 76 feet (23 m) is a white, conical tower with a black lantern. The house itself lies on a cast-iron caisson which is built into the breakwater. The pier of the ...
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