The Series 185 Linear Smart Positioner is easy to manage and affordable. It's made to control valve strokes in linear motion valves and it works from 4 to 20 mA from the controller. This is used with strong aluminum and stainless steel to make it functional in many environments. It uses a NEMA 4X (IP66) body to keep it sturdy and protect it's microprocessing unit while an analog feedback signal is used to keep the valves under control. This also has an auto calibration system to make it accurate. Only a little air is used, thus making the setup affordable and useful. This is also small enough to where it can work with many actuators. This uses an LCD screen for display purposes and is used with a single or double action setup depending on what the user may prefer. The unit will fail if the mA signal is lost.