A sensor switch includes an insulated housing having an inner wall surface that defines a through hole. The through hole has a shoulder interconnecting large and small diameter hole sections thereof. A first conductive terminal includes a head portion embedded in the large diameter hole section and having a first contact surface. A plug portion of a second conductive terminal is embedded in the large diameter hole section spaced apart from the head portion and has a second contact surface facing the first contact surface. The inner wall surface and the first and second contact surfaces cooperatively confine a sensing chamber. At least one conductive member is rollably accommodated in the sensing chamber.

A sensor switch includes an insulated housing having an inner wall surface that defines a through hole. The through hole has a shoulder interconnecting large and small diameter hole sections thereof. A first conductive terminal includes a head portion embedded in the large diameter hole section and having a first contact surface. A plug portion of a second conductive terminal is embedded in the large diameter hole section spaced apart from the head portion and has a second contact surface facing the first contact surface. The inner wall surface and the first and second contact surfaces cooperatively confine a sensing chamber. At least one conductive member is rollably accommodated in the sensing chamber.

Switch apparatus (10) includes a switching assembly (16) and an operating component assembly (18) respectively designed for mounting upon relative shiftable members, such as a door (12) and frame (14). The assembly (16) includes a magnetic switch unit (30) having an elongated housing (40), first and second spaced apart switch elements (36, 38), and a shiftable, electrically conductive body (50) within the housing and movable between a first switch state where the body is in simultaneous contact with the switch elements (36, 38), and a second switch state where the body is not in such simultaneous contact. In order to prevent unauthorized opening of the relatively shiftable members through use of an external defeat magnet (62), the switch unit (30) is mounted substantially horizontally rather than in an upright or oblique orientation.

Switch apparatus (10) includes a switching assembly (16) and an operating component assembly (18) respectively designed for mounting upon relative shiftable members, such as a door (12) and frame (14). The assembly (16) includes a magnetic switch unit (30) having an elongated housing (40), first and second spaced apart switch elements (36, 38), and a shiftable, electrically conductive body (50) within the housing and movable between a first switch state where the body is in simultaneous contact with the switch elements (36, 38), and a second switch state where the body is not in such simultaneous contact. In order to prevent unauthorized opening of the relatively shiftable members through use of an external defeat magnet (62), the switch unit (30) is mounted substantially horizontally rather than in an upright or oblique orientation.

A tilt ball switch includes a cover, a first positioning unit, a plurality of conductive members, a conductive ball, a base wall, a surrounding wall that extends from a periphery of the base wall, and an opening that is formed at one end of the surrounding wall opposite to the base wall. The cover closes the opening, and cooperates with the base wall and the surrounding wall to define a receiving space. The first positioning unit is disposed in the receiving space, and is positioned between the base wall and the cover. The conductive ball is convertible between a conducting state, in which the conductive ball is in contact with at least two of the conductive members, and a non-conducting state, in which the conductive ball is spaced apart from the conductive members.

A tilt ball switch includes a cover, a first positioning unit, a plurality of conductive members, a conductive ball, a base wall, a surrounding wall that extends from a periphery of the base wall, and an opening that is formed at one end of the surrounding wall opposite to the base wall. The cover closes the opening, and cooperates with the base wall and the surrounding wall to define a receiving space. The first positioning unit is disposed in the receiving space, and is positioned between the base wall and the cover. The conductive ball is convertible between a conducting state, in which the conductive ball is in contact with at least two of the conductive members, and a non-conducting state, in which the conductive ball is spaced apart from the conductive members.