Switching device and remote control using the switching device

A remote control unit comprising:

• (1) a switching device including;
• an operating part which is rotatable or movable;
• a cam which is formed at an inner boundary of the operating part;
• and
• a switch disposed inside an inner periphery of the operating part with a lever of the switch being engaged with the cam,
• in which the lever is rock-motioned by a rotational operation or by a moving operation of the operating part,
• in which an operated position of the operating part is detected with an electrical connection and a disconnection of the switch;
• (2) a pressing part on which a plurality of keys is formed, a pressing operation of the key allowing a moving contact to make an electrical connection with and disconnection from a fixed contact;
• and
• (3) a controller connected to the switch and the fixed contact of the switching device,
• wherein the controller transmits a remote control signal through a transmitter corresponding to the electrical connection and disconnection of the switch and the electrical connection and disconnection of the moving contact with and from the fixed contact.