| 摘要 |
A device designed to be plugged directly into a household power supply socket comprising a sensor for controlling an electrical device, the sensor having selectable sensing orientation and being one of a motion detector, an infrared detector, a photodetector or a sound detector, whereby the sensor generates a control signal to the electrical device, the electrical device being one of a light bulb, a mobile telephone, a security device such as a sound or burglar alarm, or a monitoring device such as a surveillance camera, upon detection of a change in an environment, e.g. movement, ambient light, sound, etc.
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