An electromagnetic relay includes a base, a first terminal, a fixing member, and a first adhesive. The base includes a first hole. The base is made of a thermosetting resin. The first terminal extends through the first hole. The fixing member is a separate body from the base. The fixing member has higher elasticity than the thermosetting resin. The fixing member fixes the first terminal to the base. The fixing member includes a first support wall and a first recess. The first support wall is disposed between an inner surface of the first hole and the first terminal. The first support wall extends upward along the first terminal. The first recess is disposed on an upper surface of the first support wall and faces the first terminal. The first adhesive is filled in the first recess. The first adhesive adheres the first terminal and the first support wall.

A method for controlling a target switch assembly in a chain of switch assemblies includes distributing the chain of switch assemblies in a wellbore; placing a controller at a head of the wellbore; making a first decision, at the controller, to actuate a corresponding detonator of the target switch assembly; transmitting, from the controller to the target switch assembly, a fire command to activate the corresponding detonator; and making a second decision, locally, at the target switch assembly, to activate the detonator, after the fire command from the controller is received.

A switch seat body assembling structure includes a main body for assembling with a switch component. The main body is composed of a metal head section in the form of a thin sheet structure and a nonmetal belly section. The main body is defined with an eccentric axis and has a shaft hole positioned on the eccentric axis. The metal head section has a first wall normal to or inclined from the eccentric axis and a second wall connected with the first wall and parallel to or inclined from the eccentric axis. The first and second walls together define a space. The nonmetal belly section fills the space to connect with entire sections of the first and second walls as an integrated body. The switch seat body assembling structure improves the problems that the processing and manufacturing processes are time-consuming and troublesome and the material cost is higher.

A switch seat body assembling structure includes a main body for assembling with a switch component. The main body is composed of a metal head section in the form of a thin sheet structure and a nonmetal belly section. The main body is defined with an eccentric axis and has a shaft hole positioned on the eccentric axis. The metal head section has a first wall normal to or inclined from the eccentric axis and a second wall connected with the first wall and parallel to or inclined from the eccentric axis. The first and second walls together define a space. The nonmetal belly section fills the space to connect with entire sections of the first and second walls as an integrated body. The switch seat body assembling structure improves the problems that the processing and manufacturing processes are time-consuming and troublesome and the material cost is higher.

A device for limiting movement of an operator of at least one switch of a light fixture can include a body. The device can also include at least one fixture coupling feature disposed on the body, where the at least one fixture coupling feature is configured to couple to at least one device coupling feature of the light fixture. The body, when coupled to the light fixture, can be configured to limit the movement of a first operator of a first switch of the at least one switch.

A device for limiting movement of an operator of at least one switch of a light fixture can include a body. The device can also include at least one fixture coupling feature disposed on the body, where the at least one fixture coupling feature is configured to couple to at least one device coupling feature of the light fixture. The body, when coupled to the light fixture, can be configured to limit the movement of a first operator of a first switch of the at least one switch.

A method of insulating an electrical switch includes forming a switch cover having a front wall, a first side wall, a second side wall, a top wall, and an open bottom opposite the top wall by folding a sheet of electrically insulating material. The method includes placing the switch cover over a component of the electrical switch, the component extending into the switch cover through the open bottom.

A method of insulating an electrical switch includes forming a switch cover having a front wall, a first side wall, a second side wall, a top wall, and an open bottom opposite the top wall by folding a sheet of electrically insulating material. The method includes placing the switch cover over a component of the electrical switch, the component extending into the switch cover through the open bottom.

Axis orientation compensation is provided in a system in which movement of a controlling device is used to control navigational functions of a target appliance by determining which one of plural sides of the controlling device is an active side of the controlling device and by causing navigational functions of the target appliance made relative to at least one of an X, Y, and Z axis of the target appliance to be dynamically aligned with movements of the controlling device made relative to at least one of an A, B, and C axis of the controlling device as a function of the one of the plural sides of the controlling device that is determined to be the active side of the controlling device.

This application is directed to a home monitoring and control system including a doorbell installed at a door of a home. The doorbell has a button configured to, upon being pressed, wirelessly initiate a first communication to indicate presence of a person at the door. The doorbell also has a camera configured to capture video data within a field of view, and a processor configured to cause a communication component to enable the first communication and wirelessly stream via a remote server the video data captured by the camera to a monitoring device associated with an occupant of the home.