Abstract: A latch control for an explosion relief panel is described in which the panel of relatively rigid construction, is normally retained in place by an arm pivotally mounted at one end, a pivotally mounted fork assembly at the other end of the arm which includes a magnetically responsive keeper which is loosely attached to the fork assembly, a magnet carried by the arm normally holding the keeper firmly to prevent rotation of the fork assembly about its pivotal axis. A plurality of springs exerting the desired force are interposed between the panel and the arm. The door carries a rigid post, adjustable in length, for movement with the panel against the force of the springs to apply a releasing force on the keeper to release the keeper and move the fork assembly to a release position so that the arm rotates and releases the panel.