Labeled Marathon Electronics KVFN 222 HASP But does not look like the other unit labeled Marathon KVFN 222 HASP Note the photos the boards are silkscreened KVFS Looks more like a KVFS 222 EA except it has an extra potentiometer labeled VR6 Thermal. Also this item has a voltage / frequency ratio mode selection like a KVFN (P1-P8 or H1-H8) The KVFS has a v/f ratio mode selection of 51-58 or 61-68. Kasuga E.
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