A connector includes an insulating housing that is fixed to a casing of a first device at a communication part through which an opening of the casing of the first device and an opening of a casing of a second device communicate with each other and includes first through holes, conductors that are inserted into the respective first through holes to electrically connect the first device and the second device, an insulating sealing member that includes tubular sealing parts that seal between the conductors and the housing, and a connecting part that connects the sealing parts, and an insulating support member that includes second through holes into which the conductors are inserted, is attached to the housing from a side of the second device, and interposes the sealing member between the support member and the housing to support the sealing parts.