A safety switch includes a detection unit, an output unit, an input unit; and a display unit. The detection unit is configured to detect presence or absence of abnormality. The output unit is configured to output an abnormality detection signal indicating a detection result of the presence or absence of the abnormality. The input unit is configured to input a display control signal. The display unit is configured to perform display based on the display control signal.

A display apparatus includes a light source, a display unit including a light-transmissive portion having a predetermined design shape, and a light guide that guides light emitted from the light source to the light-transmissive portion. The display unit enables the design shape to be visually recognized when the light emitted from the light source is applied. The light guide includes a radiating portion that applies the light emitted from the light source toward the light-transmissive portion, a first peripheral wall, a second peripheral wall, an upper wall, and an outer peripheral wall. Each of the radiating portion, the first peripheral wall, the second peripheral wall, the upper wall, and the outer peripheral wall is integral to the light guide. Each or all of the first peripheral wall, the second peripheral wall, the upper wall, and the outer peripheral wall are supporting portions that support the radiating portion.

A programmable pushbutton breaker switch having a pushbutton, a plurality of amperage indicating light emitting diodes (LEDs), a plurality of breaker circuits, and a plurality of LED light pipes in an interior of the pushbutton. Each of the LEDs is associated with a specific breaker circuit and with a specific light pipe. Light from a specific LED passes through a specific LED light pipe and produces an indicator light on the top of the pushbutton. The indicator light identifies an amperage amount, shown on the top of the pushbutton, of a specific breaker circuit. A programming switch inside the programmable pushbutton breaker switch allows the operation of the pushbutton to select a desired breaker amperage amount from a plurality of breaker amperage amounts shown on the top of the pushbutton and to set and store the desired amperage amounts in the programmable pushbutton breaker switch.

An illuminated keyboard includes a light-emitting diode light string, a controller, a feedback line and a plurality of keys. The light-emitting diode light string includes a plurality of light-emitting diode modules which are connected in series through a serial connection wire. Each light-emitting diode module includes a light-emitting diode chip and a drive circuit. The controller is electrically connected with the light-emitting diode light string. The feedback line is electrically connected between the light-emitting diode modules and the controller. The keys correspond to the light-emitting diode modules and are electrically connected with the feedback line. Each light-emitting diode module emits light according to a received light-emitting signal and outputs a feedback signal. When at least one of the keys is switched to a pressing state, the feedback signal is pulled from a first level to a second level for the controller to differentiate the key in the pressing state.

A multi-functional control device includes a casing unit, and press button modules disposed on a main circuit board in the casing unit. Each press button module includes a sub-circuit board connected to the main circuit board, a micro-contact switch mounted on the sub-circuit board, an auxiliary case removably mounted on the micro-contact switch, a driving circuit board removably disposed in the auxiliary case to connect the sub-circuit board, a display module removably disposed on the auxiliary case. A transparent cap covers the display module and the auxiliary case, and is detachably connected to the auxiliary case.

A multi-functional control device includes a casing unit, and press button modules disposed on a main circuit board in the casing unit. Each press button module includes a sub-circuit board connected to the main circuit board, a micro-contact switch mounted on the sub-circuit board, an auxiliary case removably mounted on the micro-contact switch, a driving circuit board removably disposed in the auxiliary case to connect the sub-circuit board, a display module removably disposed on the auxiliary case. A transparent cap covers the display module and the auxiliary case, and is detachably connected to the auxiliary case.

The present invention provides a pluggable multifunctional push switch, comprising: a main socket, a transmission opening disposed on a bottom wall of the main socket; a sliding base, slid up and down in the main socket; a pressing signal assembly, the sliding base triggering a pressing signal after being pressed downward; a keycap, fixed on the sliding base; an integrated circuit board, disposed into the sliding base and having a downwardly extended transmission member, wherein a bottom end of the transmission member has a plug-in portion; a fixed base, disposed on the integrated circuit board; a display, disposed on the fixed base; and a touchpad, located under the keycap. The pluggable transmission concept is further used in the present invention, so that the switch can be more easily disassembled and easily transferred to another device for use.

An illuminated keyboard includes a light-emitting diode light string, a controller, a feedback line and a plurality of keys. The light-emitting diode light string includes a plurality of light-emitting diode modules which are connected in series through a serial connection wire. Each light-emitting diode module includes a light-emitting diode chip and a drive circuit. The controller is electrically connected with the light-emitting diode light string. The feedback line is electrically connected between the light-emitting diode modules and the controller. The keys correspond to the light-emitting diode modules and are electrically connected with the feedback line. Each light-emitting diode module emits light according to a received light-emitting signal and outputs a feedback signal. When at least one of the keys is switched to a pressing state, the feedback signal is pulled from a first level to a second level for the controller to differentiate the key in the pressing state.

A user interface assembly that can be selectively attached to a housing of a tool, including mobile and handheld tools. The assembly can include a housing having an opening that extends through a first side of the housing. A user input device in the form of a rotatable and linearly displaceable control ring, which is housed in the housing, can extend within a portion of the opening such that the control ring is recessed from the first side of the housing. A display that can visually communicate tool information and selectable settings to the user can be positioned within the housing, and centrally located relative to a central bore of the control ring. The display, which can remain relatively static relative to a rotational displacement of the control ring, can be inwardly offset from a first side of the control ring, and thus also recessed within the housing.

A programmable pushbutton breaker switch having a pushbutton, a plurality of amperage indicating light emitting diodes (LEDs), a plurality of breaker circuits, and a plurality of LED light pipes in an interior of the pushbutton. Each of the LEDs is associated with a specific breaker circuit and with a specific light pipe. Light from a specific LED passes through a specific LED light pipe and produces an indicator light on the top of the pushbutton. The indicator light identifies an amperage amount, shown on the top of the pushbutton, of a specific breaker circuit. A programming switch inside the programmable pushbutton breaker switch allows the operation of the pushbutton to select a desired breaker amperage amount from a plurality of breaker amperage amounts shown on the top of the pushbutton and to set and store the desired amperage amounts in the programmable pushbutton breaker switch.