An electronic module (100) for mating with a complementary connector, comprises: a housing defining a recess area and a printed circuit board (3) disposed in the housing. A slider member is (61) assembled to an exterior surface of the housing and defining a pair of arm portions (612) formed on a front end thereof. And a gasket (5) is assembled to the recess area and defining a pair of curved portions (543) located above two free ends of the pair of arm portions. Whereby movement of the slider by a user along a front to rear direction, the two free ends of the pair of arm portions respectively raise up the pair of curved portions.