Remote controller and remote control system

A remote control system comprising:

• a remote controller that transmits a wireless signal;
• and
• a receiving unit that receives the wireless signal from the remote controller and controls an instrument based on information included in the wireless signal received, wherein the remote controller includes:
• an operation unit;
• a power generating unit that generates electric power by operation on the operation unit;
• a signal generating unit that operates by using electric power generated by the power generating unit and is able to output a signal of a kind corresponding to a content of each operation on the operation unit;
• a storage unit that operates by using electric power generated by the power generating unit and nonvolatilely stores a content of an output signal of the signal generating unit;
• and
• a transmission control unit that operates by using electric power generated by the power generating unit and transmits a wireless signal including information corresponding to a content of the output signal stored in the storage unit when the operation on the operation unit satisfies a predetermined condition.