Here is an effective, easy-to-use EMI/RFI fighter. Just snap the 13x25.2x3.5(mm) ferrite core over coax cable, AC or audio cord. It prevents electro-magnetic interference (EMI) and cuts down on radio-frequency interference (RFI).
- Simply snap it over any coax cable, AC or audio cord
- Prevents EMI and cuts down on RFI