A seat height adjustment module for a seat, in particular for a vehicle seat, having a manually operable control element which, to provide an adjusting movement for the seat, can be moved out of an initial position into a first actuating position and into a second actuating position and back. A primary spring is provided, which cooperates with a transmission member such that the primary spring is relaxed with movement of the control element into a first actuating position and such that the primary spring is tensioned with movement of a control element into the second actuating position.