NAVIGATION DEVICE

An object of the present invention is to provide a navigation device that can automatically open/close an electric garage door by remote control without manual operation and that can prevent erroneous opening/closing of the electric garage door. A navigation device 10 can be connected to a wireless garage door opener transmitter 50. The navigation device 10 transmits an open signal to the wireless garage door opener transmitter 50 when a vehicle position calculated by a GPS receiver 24 and an orientation detected by a gyro sensor 40 are within a predetermined range that respectively includes a preset electric garage door open instruction position and orientation, and a vehicle speed detected by a vehicle speed sensor 38 is no greater than a predetermined value. Thus, erroneous opening of the electric garage door when the vehicle approaches the electric garage with an object other than entering the electric garage can be prevented.