Abstract: A sensor switch includes an infrared sensor, and a control unit coupled to the infrared sensor and configured to receive a signal corresponding to an object detected by the infrared sensor, wherein the control unit is configured to enable an ON state of a device under control of the sensor switch for a period of time depending on a duration and a strength of the signal from the infrared sensor.

Abstract: A sensor switch includes an infrared sensor, and a control unit coupled to the infrared sensor and configured to receive a signal corresponding to an object detected by the infrared sensor, wherein the control unit is configured to enable an ON state of a device under control of the sensor switch for a period of time depending on a duration and a strength of the signal from the infrared sensor.

Abstract: A safety door for use with a rotatable power supply socket having a mounting base with plugging holes therein. The safety door includes first, second and third sliding parts, and an elastic assembly. The safety door includes three rectangular plugging holes, a left-hand, middle and right-hand plugging hole, and two ground plugging holes, upper and lower. While sliding in a rail slot of the mounting base, the first sliding part can block the left-hand plugging hole while sliding along the left-right direction, the second sliding part can block the right-hand plugging hole while sliding along the left-right direction; the third sliding part can block or expose the middle plugging hole while sliding along the left-right direction. The elastic assembly includes a first elastic part for providing returning elastic force to the first sliding part and a second elastic part for providing returning elastic force to the second sliding part.

Abstract: A safety door for a rotatable power supply socketincludes a mounting base with composite plugging holes, first, second and third sliding parts, and an elastic assembly. The composite plugging holes include a left-hand, middle and right-hand plugging hole, and an upper and lower ground plugging hole. While sliding in a rail slot of the mounting base, the first sliding part can block the left-hand plugging hole while sliding along the left-right direction, the second sliding part can block the right-hand plugging hole while sliding along the left-right direction; the third sliding part can block or expose the middle plugging hole while sliding along the left-right direction. The elastic assembly includes a first elastic part for providing returning elastic force to the first sliding part and a second elastic part for providing returning elastic force to the second sliding part.