Wireless control device, position calibrator and accessory

A wireless control device, adapted to detect a signal from a signal source to generate a corresponding first sensing signal and wirelessly transmit the first sensing signal to a host, the wireless control device comprising:

• a position calibrator, comprising:
• a first main body;
• a first coupling structure, disposed on the first main body;
• at least one position sensing element, adapted to detect the signal from the signal source;
• a first microprocessor, electrically connected to the at least one position sensing element, wherein the first microprocessor generates the first sensing signal based on the signal detected by the at least one position sensing element;
• and
• a wireless transmitting module, electrically connected to the first microprocessor and wirelessly transmitting first sensing signal to the host, wherein the first main body carries the at least one position sensing element, the first microprocessor and the wireless transmitting module;
• an accessory, detachably assembled with the position calibrator and comprising:
• a second main body;
• and
• a second coupling structure, disposed on the second main body, wherein the position calibrator is detachably assembled to the second coupling structure of the accessory through the first coupling structure.