Abstract: 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.