The invention relates to a device in which a movably mounted output element (106) has two end positions, wherein a latching mechanism (50) is arranged between the output element and the driving device thereof, via which latching mechanism the output element can be brought by a lifting or pivoting movement during a first driving pulse out of the first into the second end position counter to a restoring force and via which, during a second driving pulse, the output element can be transferred from the second into the first end position by the restoring force. A device is developed by the present invention, the device, for example within a braking, clamping or gripping device, permitting two stable end positions in which the particular useful device is kept in the actuated or unactuated state without the supply of external power.