Fluke flk cnx a3000 wireless current clamp module fluke fluke flk cnx a3000 the fluke a3000 current clamp module is a true rms meter that wirelessly relays measurements to a cnx 3000 multimeter up to 20 meters away you ll save time collecting multiple measurements with less walking to and fro use as a stand alone measurement tool with multiple modules on three phase systems or combine with other cnx modules for complex system testing at short distances you can even view readings from modu