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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.
Occupancy sensor types include: PIR sensors, which work on heat difference detection, measuring infrared radiation.Inside the device is a pyroelectric sensor which can detect the sudden presence of objects (such as humans) who radiate a temperature different from the temperature of the background, such as the room temperature of a wall.
32 Regiment Royal Artillery (The Wessex Gunners) is a regiment in the Royal Artillery, part of the British Army and is the only Royal Artillery unit equipped with miniature unmanned aerial systems. History
The first Westland-built Wessex serial XL727, designated a Wessex HAS.1, first flew on 20 June 1958. [4] The first production Wessex HAS1 were delivered to Royal Navy's Fleet Air Arm (FAA) in early 1960; the Wessex was the first helicopter operated by the FAA to be purpose-designed from scratch as an anti-submarine platform. [5]
43rd Brigade (43rd Bde) was an infantry formation of the British Army during both World Wars. It was formed in August 1914 as part of Kitchener's Army and was assigned to the 14th (Light) Division, serving on the Western Front.
Princess Anne made a special visit to the hospital where she was treated after a horse-related accident to thank the staff who looked after her.. On Feb. 6, the Princess Royal, 74, returned to ...
Ford Motor is recalling 272,817 vehicles in the United States due to concerns over battery failure, the National Highway Traffic Safety Administration (NHTSA) said on Thursday. The recall affects ...
Every day, Donald Trump shatters previous understandings of the presidency and America’s role in the world. But in his rush to wield vast power and fulfill campaign promises, the new commander ...