A wireless communication device for a human-powered vehicle comprises a wireless communicator and a controller. The wireless communicator is configured to wirelessly communicate with an additional wireless communicator. The wireless communicator has a first mode in which the wireless communicator operates under a first power consumption and a second mode in which the wireless communicator operates under a second power consumption which is lower than the first power consumption. The controller is configured to detect a change in a state of at least one switch. The controller is configured to set the wireless communicator with the first mode if the controller detects the change in the state of the at least one switch as the wireless communicator is in the second mode.