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Since PIR sensors have ranges of up to 10 meters (30 feet), a single detector placed near the entrance is typically all that is necessary for rooms with only a single entrance. PIR-based security systems are also viable in outdoor security and motion-sensitive lighting; one advantage is their low power draw, which allows them to be solar ...
The coincidental conclusion of construction of the new Chicago Harbor light and the close of the Exhibition prompted the Lighthouse Board to keep the lens in Chicago, and thus the lens was installed in the lantern room of the new tower. [8] The original lens has since been removed, and is now on display at Cabrillo National Monument in ...
Waukegan Harbor Light is a lighthouse at the end of Government Pier at the foot of Madison Street in Waukegan, Illinois. [1] [2] It was first built in 1889 and moved when the pier was extended in the early twentieth century. At that time a fog signal building was added to the tower. There was a serious fire in 1967.
In the US, street lights using sodium vapor were first installed on a rural highway near Port Jervis, New York, in 1933. [1] In 1938, a study of sodium vapor light use at selected intersections in Chicago claimed that the new lighting had helped to reduce the number of accidents in those areas.
Pages in category "Outdoor sculptures in Chicago" The following 94 pages are in this category, out of 94 total. This list may not reflect recent changes. 0–9.
Musical carousel USS Chicago anchor. There are many outdoor attractions at the Navy Pier Park, such as the Pepsi Wave Swinger, Light Tower Ride, Remote Control Boats (now removed along with fountain around the Wave Swinger), Teacups and the Carousel. New for 2021 is Drop Tower, an S&S Double Shot relocated from the closed Pleasure Island. [22]
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