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Fluorescent use is declining, supplanted by LED lighting, which is more energy efficient and does not contain mercury. [citation needed] In other countries, residential use of fluorescent lighting varies depending on the price of energy, financial and environmental concerns of the local population, and acceptability of the light output.
Security lighting to prevent intrusions may be counter-productive. Turning off lights halved the number of thefts and burglary in Övertorneå Sweden. [2] [3] A test in West Sussex UK showed that adding all-night lighting in some areas made people there feel safer, although crime rates increased 55% in those areas compared to control areas and to the county as a whole.
A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
The OSD Identification Badge. The Office of the Secretary of Defense Identification Badge is a military badge issued to members of the United States armed forces who are permanently assigned to the Office of the Secretary of Defense (OSD) and its subordinate offices, and in addition, to some of the Defense Agencies and Department of Defense Field Activities.
The board of education approved a $2 million plan for a badging security system. School District 186 will spend about $2 million on a badging security system for its staff members.
UV marker with UV led lamp. An ultraviolet (UV) marker is a pen whose marks are fluorescent but transparent; the marks can be seen only under an ultraviolet light. They are commonly used in security situations to identify belongings or to prevent the reproduction of unauthorized banknotes. UV pens can now be bought at some stationery shops to ...
Sensors: In a security alarm, some sensors detect intrusions. Sensors' locations are at the perimeter of the protected area, within it, or both. Sensors can detect intruders by different methods. Alerting devices indicate an alarm condition. Most commonly, these are bells, sirens, also and or flashing lights. Alerting devices serve the dual ...
Command insignia/badges are another form of identification badge used to identify an officer or non-commissioned officer who is/was in command or in-charge of a unit. If the service member performs their leadership duties successfully, the command insignia/badge they wear can become a permanent uniform decoration regardless of their next ...
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