HALL EFFECT USB DESKTOP MFD Series Potentiometer $275.00 PRODUCT GUIDE MFD Series Hall Effect Control Knob $210.00 PRODUCT GUIDE MFD Series Hall Effect $275.00 PRODUCT GUIDE HED SERIES STANDARD Z $295.00 PRODUCT GUIDE HED SERIES SLIM Z $295.00 PRODUCT GUIDE HED SERIES LOW PROFILE Z $295.00 PRODUCT GUIDE