a system for remote adjusting of guide rail positions along a conveyor . the guide rails are adjusted to allow the conveyor to accommodate product packages of various shapes and sizes . a moveable guide rail assembly is positioned along a conveyor and is in mechanical connection with the piston rod of an actuator cylinder . a guide rail control device is fluidly connected with the actuator cylinder and it translates a mechanical input to a fluidic output that is communicated with the piston of the actuator cylinder to thereby move the guide rail assembly into a new adjustment position . the system can provide simultaneous adjustment of numerous guard rail segments from a remote guide rail control device while providing accurate non - drift infinitely - adjustable positioning .