Bluecell Pack of 15 Magnetic Ferrite Core Cord RFI EMI Noise Suppressor Cable Clip (5mm inner diameter)

Didn't reduce buzz. Maybe just my application, but didn't make a difference.

ok

Perfect size to put on the power cord for my dash cam. My dash cam was interfering with the tire pressure monitoring system in my car. I read on a forum that it needed some ferrite cores placed on the power cord near the camera. I put 4 of them on the cord and haven't had a problem since. I used some double sided tape to stick these to the windshield, which also helps route the cable.

Not 5mm inner diameter more like 3mm would not fit on tv coax

Due to a power outage, I had to replace some camera cords. Then the garage door opener stopped working. I thought I was going to have to choose. But a couple of these on the camera cord solved my problem. Did the other cameras too.

Doesn't work

Used to eliminate electrical discharges on FTC Robots and our first contest with them appears to have gone much smoother.

Good