A connector adequately detects a state of an electronic component such as a memory card which is fitted in the connector by way of insertion, even when scrapes of a housing of the electronic component are produced due to insertion and removal of the electronic component which is fitted. In this connector (100), detecting parts (160A and 160B), which detect that a memory card (20) is fitted completely in an accommodating part (102) or detect whether or not data can be written in the memory card (20), have fixed terminals (162) and movable terminals (161). In the movable terminal (161), a card contacting part (163a) placed in the accommodating part (102) is pressed by the memory card (20), so that a movable contact part (164a) contacts and conducts with the fixed terminal (162). An isolating wall part (190) is provided between the contacting part (163a) and the movable contact part (164a) to isolate a contact area between the movable contact part (164a) and the fixed terminal (162), from the contacting area between the contacting part (163a) and the memory card (20).