A swing flap (
10) for the entry and exit of pets comprising a frame (
11), which can be fixed to an opening (
12) made in a door or a wall, equipped at the top with hinged means of constraint for a flap (
20), and a first function selector (
30), designed to control the opening and closing functions of the swing flap (
10), this selector comprising a knob (
29) integral with a first pair of elements (
31, 32) being shaped in such a way to allow, respectively: the opening of the flap (
20) in a first direction;
- the opening of the flap (20) in a second direction, opposite to the first direction;
- the opening of the flap (20) in both directions;
- blocking of the opening of the flap (20).
The first selector (30) is kinematically connected to a second selector (36), not equipped with a knob but with a second pair of elements (31′, 32′) which control the opening and closing of the flap (20) depending on how the knob (29) is turned.