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Security alarm. A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school. Security alarms protect against burglary (theft) or property damage, as well as against intruders. Examples include personal systems, neighborhood security alerts, car alarms, and ...
A motion detector is an electrical device that utilizes a sensor to detect nearby motion (motion detection). Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area. They form a vital component of security, automated lighting control, home control, energy efficiency ...
SimpliSafe is a home security company headquartered in Boston, Massachusetts. The company produces and sells professional home security systems and monitoring services. The company produces and sells professional home security systems and monitoring services.
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. PIR sensors detect general movement, but do not give ...
The carbon monoxide sensor lasts longer, resulting in the new Nest Protect lasting 10 years, whereas the original Nest Protect lasts seven years. The new Nest Protect can be silenced using a smart device, if not in the US or Canada. [63] When not home, the new Nest Protect will test itself using a built-in microphone.
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Ultrasonic transducer. A curvilinear array ultrasonic transducer for use in medical ultrasonography. Inside construction of a Philips C5-2 128 element curved array ultrasound sensor. Ultrasonic transducers and ultrasonic sensors are devices that generate or sense ultrasound energy. They can be divided into three broad categories: transmitters ...
Gesture recognition. A child's hand location and movement being detected by a gesture recognition algorithm. Gesture recognition is an area of research and development in computer science and language technology concerned with the recognition and interpretation of human gestures. A subdiscipline of computer vision, [citation needed] it employs ...