The special cap, made of transparent plastic material, has two grooves for fast attachment and adjustment of magnetic limit switches.The limit switches have an internal LED visible when the limit switch is energized.REED and HALL effect type limit switches are available with free connection or already wired M12.The cap has an IP68 protection rating.Attention: to enable proper fixing in the limit switch housing, the visual indicator, when the valve is fully open, does not reach the end of the plug. The limitswitches must be set once the valve is installed in the system.