The present disclosure provides a control panel for a multifunctional cup holder installed on a reclining sofa and a sofa thereof. The control panel includes: a plurality of buttons operatively connected to a powered reclining mechanism of an extendable seat, and the plurality of buttons are configured to control the powered reclining mechanism of the extendable seat to move among different positions; a light switch button operatively connected with a light source, the light source is disposed inside a cupholder that is placed on an armrest on the extendable seat; a power supply port, and the power supply port is configured to provide power to an external electronic device; a panel body including two sides; and a circuit board disposed in the panel body, the circuit board is electronically connected with the plurality of buttons, the light switch and the power supply port.

A power conversion apparatus includes a housing including an AC inlet and a DC connector. The DC connector is connectable to an inlet for DC power of a vehicle. The AC inlet is connectable to a connector of a cable for AC power. A rectifier circuit is housed in the housing. The rectifier circuit is located between the AC inlet and the DC connector, and configured to convert AC power input from the AC inlet side into DC power and output the DC power to the DC connector side.

An illuminable electronic connector for facilitating connection with an electronic device has an illumination circuit with at least one illumination source, and an on-board power source for supplying power to the illumination source in at least some modes of operation. The connector may be configured to adjust brightness of the illumination source based on ambient light conditions using an on-board light sensor. A touch sensing input may also be provided to operate the illumination source. The connector may be further operable to enter a sleep mode when it enters a shipping phase of a supply chain and then to automatically activate the illumination source when it is unpackaged at the end of the shipping phase. An electronic device including an electronic visual interface, such as a mobile phone, may be also operated in a similar manner based on the phase of the device within a supply chain.

A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles are described. In one illustrative embodiment, an active cover plate includes a multi-gang face plate configured to be installed over a multi-gang light switch installation, the multi-gang faceplate including at least two apertures sized to accept a manually manipulatable element of switches in the multi-gang light switch installation. Prongs extend rearward from the multi-gang faceplate around at least one of the apertures.

A modular power source comprises a middle block having a housing, comprising a connector for receiving power from a supply of electricity, and at least one electrical socket on a face of the middle block, at least one wing assembly, comprising at least one connector on a face of the wing assembly, the connector configured to form an electrical connection between the wing assembly and the inner block, and at least one controllable electrical socket, and at least one computing device configured to connect or disconnect the at least one controllable electrical socket from the power source, wherein the at least one wing assembly is configured to rotate about an axis with respect to the middle block when electrically connected to the middle block via the electrical connection. Alternative embodiments are also disclosed.

A modular power source comprises a middle block having a housing, comprising a connector for receiving power from a supply of electricity, and at least one electrical socket on a face of the middle block, at least one wing assembly, comprising at least one connector on a face of the wing assembly, the connector configured to form an electrical connection between the wing assembly and the inner block, and at least one controllable electrical socket, and at least one computing device configured to connect or disconnect the at least one controllable electrical socket from the power source, wherein the at least one wing assembly is configured to rotate about an axis with respect to the middle block when electrically connected to the middle block via the electrical connection. Alternative embodiments are also disclosed.

A charging device for a physiological signal transmitter is disclosed, wherein the physiological signal transmitter is to receive and transmit a physiological signal from a subcutaneous tissue of a living body, and has a first electrical connecting port. The charging device comprises a body including a placing portion, a charging module and an operating module. The placing portion disposes thereon the physiological signal transmitter, and includes a bearing surface and a first opening. The bearing surface disposes thereon the physiological signal transmitter, and the first opening aligns therewith the first electrical connecting port of the physiological signal transmitter. The charging module is accommodated in the body and includes a second electrical connecting port, a third electrical connecting port and a circuit assembly. The second electrical connecting port is disposed in the opening and protrusive beyond or beneath the bearing surface. The third electrical connecting port is connected to a power source. The circuit assembly is configured to control a charging on the physiological signal transmitter, and electrically connected to the second electrical connecting port and the third electrical connecting port. The operating module is accommodated in the body, and coupled with the charging module, wherein when the physiological signal transmitter is placed on the bearing surface and in a first operating state, the operating module protrudes the second electrical connecting port beyond the bearing surface to electrically connect with the first electrical connecting port.

A socket tester device includes an electrical plug that is to be inserted into an electrical socket, a tester circuit electrically coupled to the electrical plug, a sound emitting device, a communication device, a processor, and a memory. The tester circuit outputs one or more signals indicating a wiring condition of the electrical socket into which the electrical plug is inserted. The memory stores instructions that, when executed by the processor, cause the processor to receive the one or more signals indicating the wiring condition of the electrical socket into which the electrical plug is inserted, control the communication device to wirelessly transmit a first message that includes data indicating the wiring condition of the electrical socket into which the electrical plug is inserted, and control whether the sound emitting device emits one or more sounds.

A power adapter includes a housing body, a rear cover, a circuit board assembly, a first guide connector, a second guide connector, and a thermally conductive liquid. The housing body and the rear cover are connected in a sealed manner and enclose to form an accommodating cavity, the circuit board assembly is disposed in the accommodating cavity, the thermally conductive liquid fills the accommodating cavity and wraps the circuit board assembly, the housing body includes a front end wall disposed opposite to the rear cover, the first guide connector is mounted on the front end wall and connected to the front end wall in a sealed manner, the second guide connector is mounted on the rear cover and is connected to the rear cover in a sealed manner.

Embodiments of the present disclosure provide a DC-AC converter, including: a converter housing; an electrical connector, arranged on the converter housing and configured to be electrically connected with the battery module; a DC-AC conversion module arranged in the converter housing and configured to convert a direct current output from the battery module to an alternating current; and a detachable connection structure arranged on the converter housing and configured to detachably connect the DC-AC converter to the battery module. Embodiments of the present disclosure further provide an AC output device, in which the DC-AC converter is detachably connected to the battery module. The DC-AC converter can be detached from the AC output device when the user does not need the current conversion function.