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The best designs use a supercapacitor instead of a rechargeable battery, since these have a longer working life than a battery. This, along with the long-life light-emitting diode which does not burn out like an incandescent bulb, give the flashlight a long lifetime, making it a useful emergency light. A disadvantage of many current models is ...
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.
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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The modern standard for plug-in vehicle charging is the SAE 1772 conductive connector (IEC 62196 Type 1) in the US. The ACEA has chosen the VDE-AR-E 2623-2-2 (IEC 62196 Type 2) for deployment in Europe, which, without a latch, means unnecessary extra power requirements for the locking mechanism. [citation needed]
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