Audio device with connection terminal and sensor

An electronic device, comprising:

• a housing including an opening, and a speaker disposed in the opening;
• and
• an interface structure at least partly disposed in the housing,
• wherein the interface structure comprises:
• a substrate electrically connected to the speaker by an electrical connection within the housing;
• a connection terminal disposed on the substrate such that at least a portion of the connection terminal is exposed to an external environment through a first opening of the housing;
• a sealing part disposed where the substrate and the connection terminal are connected, so as to block exposure of the connected portion to the external environment;
• a sensor disposed on the substrate in a position adjacent to the connection terminal;
• a window member that is disposed on the substrate so as to cover the sensor while exposing at least a portion of the sensor to the external environment through a second opening of the housing;
• and
• a waterproofing member disposed between the window member and the substrate so as to form a seal between a portion of the window member and the substrate.