Wireless communication device

Abstract

To provide a wireless communication device that appropriately controls the power supply to the slave unit, reduces the power consumption of the slave unit during standby, and improves convenience. [Solution] The wireless communication device comprises a master unit and a slave unit that communicates wirelessly with the master unit. The slave unit has a main circuit including a receiving unit 414 that receives a normal operation start signal transmitted from the master unit, a power supply unit 34 that supplies power to each component of the slave unit, and a power control unit 43 that controls the power supply unit 34. Upon receiving a start signal, the power control unit 43 transitions from low-power control, which does not supply power to at least a part of the slave unit's main circuit 41, to temporary operation control, which supplies power to the receiving unit 414 and enables it to receive the normal operation start signal. If the normal operation start signal is received within a certain time after transitioning to temporary operation control, it transitions from temporary operation control to normal operation control, which supplies power to all components of the main circuit 41.