Abstract: An opening and closing device comprises a powered sliding unit, a powered closing unit in the slide door, a first terminal connected to a battery on the body, a second terminal connected to the closing unit, a handle switch provided in the door for detecting actuation of an open handle, a controller provided in the body for operating the sliding unit, a wireless apparatus for transmitting a radio signal to the controller when the switch detects the actuation of the handle. The second terminal electrically contacts with the first terminal when the door is closed. The device has a wire apparatus composed of a first wire line for connecting the first terminal and the controller, and a second wire line for connecting the second terminal and the handle switch.