barrier operator 11 each time an output shaft of the motor 12 rotates a predetermined amount if desired one or more force setting controls 14 and 15 can also be provided for example to allow manual adjustment of a force setting when closing opening or both all of the above components both individually and as combined are well understood in the art therefore for the sake of brevity and the preservation of focus additional description will not be provided here so configured the movable barrier operator 11 can cause selective movement of a movable barrier by control of the motor 12 this includes moving the movable barrier from an open position to a closed position and the reverse thereof also as already indicated the movable barrier operator 11 can monitor the speed of the motor 12 and hence the corresponding speed of the movable barrier also as already indicated force settings can be manually modified by a user in this embodiment such controls when present are presumed to offer a range of adjustment from one to sixteen with sixteen representing maximum sensitivity to force and one representing the least sensitivity to force the movable barrier operator 11 comprises a programmable platform that is programmed in an ordinary fashion to function as a movable barrier operator in addition and referring now to fig2 the movable barrier operator 11 is programmed to respond in an interrupt fashion 20 upon receipt of a signal from the sensor 13 as a result the operator 11 will receive.