A rolling-ball tilt switch includes a conductive housing having an inner surface that surrounds a longitudinal axis and that defines a roller cavity, an insulating seat inserted into the roller cavity, a conductive terminal having a protruding section extending through the insulating seat into the roller cavity, and a conductive rolling-ball disposed in the roller cavity and movable between a conducting position and a non-conducting position. The longitudinal axis and an extension of a surface portion of the inner surface of the conductive housing cooperatively define an angle ranging from 5 to 55 degrees.

A rolling-ball tilt switch includes a conductive housing having an inner surface that surrounds a longitudinal axis and that defines a roller cavity, an insulating seat inserted into the roller cavity, a conductive terminal having a protruding section extending through the insulating seat into the roller cavity, and a ball unit disposed in the roller cavity and moveable between a conducting position and a non-conducting position. The longitudinal axis and an extension of a surface portion of the inner surface of the conductive housing cooperatively define a first angle that ranges from 2 to 12 degrees.

An electromechanical switch includes first and second stationary contacts and a movable contact. Each of the first and second stationary contacts has a respective protrusion at a mating end thereof. The movable contact defines a first depression and a second depression along a mating side thereof. The movable contact is reciprocally movable into and out of a closed position relative to the first and second stationary contacts. In the closed position, the mating side of the movable contact engages the mating ends of the first and second stationary contacts such that the protrusion of the first stationary contact projects into the first depression and the protrusion of the second stationary contact projects into the second depression.

A rolling-ball tilt switch includes a conductive housing having an inner surface that surrounds a longitudinal axis and that defines a roller cavity, an insulating seat inserted into the roller cavity, a conductive terminal having a protruding section extending through the insulating seat into the roller cavity, and a conductive rolling-ball disposed in the roller cavity and movable between a conducting position and a non-conducting position. The longitudinal axis and an extension of a surface portion of the inner surface of the conductive housing cooperatively define an angle ranging from 5 to 55 degrees.

A rolling-ball tilt switch includes a conductive housing having an inner surface that surrounds a longitudinal axis and that defines a roller cavity, an insulating seat inserted into the roller cavity, a conductive terminal having a protruding section extending through the insulating seat into the roller cavity, and a ball unit disposed in the roller cavity and moveable between a conducting position and a non-conducting position. The longitudinal axis and an extension of a surface portion of the inner surface of the conductive housing cooperatively define a first angle that ranges from 2 to 12 degrees.

An LED bulb includes an LED photoelectric module having at least two branches of LED beads with different color temperatures connected in parallel, a control switch connected with one of the branches of LED beads, and an adjustment ring. A total voltage of one branch of LED beads is less than that of each of the other branches of LED beads. The control switch has a ball, the adjustment ring has a magnet, and when the adjustment ring rotates, the magnet draws the ball to roll to switch on or off the control switch. When the control switch is on, the branch of LED beads connected with the control switch is lighted up, and when the control switch is off, the branch of LED beads connected with the control switch is not lighted up.

An LED bulb includes an LED photoelectric module having at least two branches of LED beads with different color temperatures connected in parallel, a control switch connected with one of the branches of LED beads, and an adjustment ring. A total voltage of one branch of LED beads is less than that of each of the other branches of LED beads. The control switch has a ball, the adjustment ring has a magnet, and when the adjustment ring rotates, the magnet draws the ball to roll to switch on or off the control switch. When the control switch is on, the branch of LED beads connected with the control switch is lighted up, and when the control switch is off, the branch of LED beads connected with the control switch is not lighted up.

An LED bulb includes an LED photoelectric module having at least two branches of LED beads with different color temperatures connected in parallel, a control switch connected with one of the branches of LED beads, and an adjustment ring. A total voltage of one branch of LED beads is less than that of each of the other branches of LED beads. The control switch has a ball, the adjustment ring has a magnet, and when the adjustment ring rotates, the magnet draws the ball to roll to switch on or off the control switch. When the control switch is on, the branch of LED beads connected with the control switch is lighted up, and when the control switch is off, the branch of LED beads connected with the control switch is not lighted up.

A sensor switch includes two electroconductive terminals and two electroconductive beads. The electroconductive terminals are spaced apart along an axis. Each of the electroconductive terminals has an inner surrounding surface surrounding the axis and having an indented segment indented away from the axis. The electroconductive beads are movably and respectively disposed in the electroconductive terminals. When the sensor switch is placed such that the axis horizontally leveled, the electroconductive beads are respectively retained in the indented segments of the electroconductive terminals to be spaced apart from each other so that the sensor switch is in an open state.

A sensor switch includes two electroconductive terminals and two electroconductive beads. The electroconductive terminals are spaced apart along an axis. Each of the electroconductive terminals has an inner surrounding surface surrounding the axis and having an indented segment indented away from the axis. The electroconductive beads are movably and respectively disposed in the electroconductive terminals. When the sensor switch is placed such that the axis horizontally leveled, the electroconductive beads are respectively retained in the indented segments of the electroconductive terminals to be spaced apart from each other so that the sensor switch is in an open state.