A downhole system including a gun string configured to be deployed into a wellbore, the gun string including plural gun assemblies. A detonator block attached to a given gun assembly of the plural gun assemblies. The detonator block includes a switch assembly. The switch assembly includes a communication unit (CU) configured to receive, from an external controller, a fire command to activate a detonator associated with the detonator block, a measuring unit configured to measure a parameter (V) at the switch assembly, and a computing core (CC) configured to locally make a decision whether to activate or not the detonator, after the fire command is received from the external controller, based on whether a voltage measured by the measuring unit at the switch assembly is larger or not than a threshold voltage.

The present disclosure discloses a combination electronic switch with a transformable combination, which comprises a control operation module, a power and execution module, and a panel mounting module. The control operation module comprises a drive control assembly and an operation component, the power and execution module comprises a drive execution assembly, and the drive control assembly of the control operation module is electrically connected to the drive execution assembly of the power and execution module through preset assemblies. The control operation module is fixedly clamped to the power and execution module, and the panel mounting module is fixed on the power and execution module through the control operation module or directly fixed on the power and execution module.

A mechanical switch (10), in particular a light switch and/or a roller shutter switch and/or thermostat switch is provided. The mechanical switch (10) has a switching contact assembly (20), in particular a monostable, bistable or tristable switching contact assembly (20), and a base carrier (40), in which the switching contact assembly (20) is received The base carrier (40) has a holding device (50) for receiving an electromechanical actuator unit (100), which is designed in such a way that an electromechanical actuator unit (100) received in the holding device (50) can be supplied with voltage for effecting a state change of the switching contact assembly (20) independently of an external mechanical action on an operating mechanism by means of the electromechanical actuator unit (100).

A mechanical switch (10), in particular a light switch and/or a roller shutter switch and/or thermostat switch is provided. The mechanical switch (10) has a switching contact assembly (20), in particular a monostable, bistable or tristable switching contact assembly (20), and a base carrier (40), in which the switching contact assembly (20) is received The base carrier (40) has a holding device (50) for receiving an electromechanical actuator unit (100), which is designed in such a way that an electromechanical actuator unit (100) received in the holding device (50) can be supplied with voltage for effecting a state change of the switching contact assembly (20) independently of an external mechanical action on an operating mechanism by means of the electromechanical actuator unit (100).

A centrifugal switch for a motor of a clothes dryer is provided. The end of a bracket and the end of a fixed contact piece are arranged in alignment and each has a raised contact. An upper limit piece slot is provided above the contact of the bracket inside the housing. The aligned ends of the bracket and the fixed contact piece are located above the aligned ends of a starting spring piece, a starting lower piece and a starting upper piece. A pressing head at one end of the rocking lever is located above one side of the fixed contact piece aligned with the bracket. The other end of the rocking lever extends outside the housing. When the centrifuge is not rotating, a movable sleeve of the centrifuge slides into the rocking lever to trigger the centrifugal switch.

A centrifugal switch for a motor of a clothes dryer is provided. The end of a bracket and the end of a fixed contact piece are arranged in alignment and each has a raised contact. An upper limit piece slot is provided above the contact of the bracket inside the housing. The aligned ends of the bracket and the fixed contact piece are located above the aligned ends of a starting spring piece, a starting lower piece and a starting upper piece. A pressing head at one end of the rocking lever is located above one side of the fixed contact piece aligned with the bracket. The other end of the rocking lever extends outside the housing. When the centrifuge is not rotating, a movable sleeve of the centrifuge slides into the rocking lever to trigger the centrifugal switch.

Contact assemblies are described herein having certain components, or portions thereof, that are formed integral to one another to reduce the complexity of manufacturing, improve the operation characteristics, and increase operational reliability of devices using the contact assemblies. New shapes to features and components of the contact assemblies are also disclosed, with the shapes providing the desired operational characteristics. Embodiments of the invention are also directed contactors or fuses (i.e., electrical switching devices) utilizing the contactor assemblies according to the present invention, and to electrical circuits and systems utilizing the electrical switching devices according to the present invention.

A wireless control switch is provided, which includes: a controller having a wireless communication function, at least one switch module arranged between two connection terminals, and an independent power supply for supplying power to the controller. Each switch module includes a relay and a two-way mechanical switch, a control terminal of the relay is connected to a control pin of the controller. The two-way mechanical switch includes a first group of changeover switches and a second group of changeover switches, an open or closed state of the first group of changeover switches being synchronized with that of the second group of changeover switches. The controller is configured to output a relay holding signal to the relay according to the open or closed state of the first group of changeover switches and a received wireless control signal, to control connection/disconnection between the two connection terminals.

Embodiments of the present disclosure provide a bracket, a functional module and a mounting method of an electrical device. The bracket described herein includes a body comprising a supporting portion adapted to support a functional component of the electrical device, a first coupling portion and a second coupling portion symmetrically arranged on the body with respect to a longitudinal axis of the supporting portion, and the second coupling portion is adapted to be coupled with the first coupling portion of a further bracket of the same specification to form a bracket set. The bracket described herein can be interlocked together, and the mounting component and the bracket are integrally formed. As a result, the appearance of the electrical device is improved, more mounting screws are saved, the mounting steps of the electrical device are reduced, and the mounting efficiency of the electrical device is improved.

Embodiments of the present disclosure provide a bracket, a functional module and a mounting method of an electrical device. The bracket described herein includes a body comprising a supporting portion adapted to support a functional component of the electrical device, a first coupling portion and a second coupling portion symmetrically arranged on the body with respect to a longitudinal axis of the supporting portion, and the second coupling portion is adapted to be coupled with the first coupling portion of a further bracket of the same specification to form a bracket set. The bracket described herein can be interlocked together, and the mounting component and the bracket are integrally formed. As a result, the appearance of the electrical device is improved, more mounting screws are saved, the mounting steps of the electrical device are reduced, and the mounting efficiency of the electrical device is improved.