The AI-Tek Tachtrol 30 is a process tachometer that is used in power plants, waster water treatment plants and basically where ever it is necessary to know the RPM of expensive rotating equipment. The unist come in three standard enclosures; Panel Mount, NEMA 4 and Explosion proof. All units ae RoHS compliant and incorporate features taht make set up very easy. Check out the details on this process tachometer.