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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.
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A motion detector attached to an outdoor, automatic light. 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.
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Nest Cam Outdoor was announced in July 2016 and is a version of the Nest Cam adapted for outdoor monitoring. The main differences from the Nest Cam Indoor is in its design which is built to withstand outdoor conditions. [70] In 2021, Google announced the second-generation, battery-powered Nest Cam Outdoor. [67]
DFR7. This low-cost detector has impressive range and all the requisite features, including GPS for low-speed false-alert muting, manual marking of up to 100 known radar locations, and speed ...