The ISA3-L is an IO-Link compatible version of SMC's ISA3 digital gap checker. A gap checker uses air pressure to verify the presence and proximity of a workpiece. Applications include confirmation of raw material placement before machining or other fabrication operations, or the correct seating of a component into a jig or fixture to trigger the next assembly sequence. ISA3-L includes features like 2 sensors detect supply and outlet pressure, to help determine whether and where this is a clog. NPN or PNP switch type is selectable electronically. The sub-screen has been divided into 2 screens, to display more information or finer resolution. The lower limit of the setting range can be extended down to zero. IO-Link communication expands functionality. Gap size, supply and outlet pressure are available as 16-bit integers. 6 bits and settings monitor 2 switch outputs. 2 additional bits are available for pressure and error diagnosis. Settings can be stored by the IO-Link master to copy automatically when replacing or deploying multiples. ISA3-L is CE and RoHS compliant, with an IP67 enclosure rating.