Abstract: A permanent magnet, bistable actuator mechanism that uses magnetic repulsion for actuation, the actuator mechanism having a first translator member with a permanent magnet element displaceable between a first position and a second position and a second translator member having a permanent magnet element displaceable between a first position and a second position with the permanent magnet elements in mutual repulsion, the translator elements being arranged in a frame or containment structure that limits displacements of the first and second translator members with one of the translator members being a master member and the other being a slave member, such that displacement of the master member from one position to the other displaces the slave member in an opposite direction with the displacement process being reversible.