Okay so I'm changing my review because after trying them they don't work. A real balun has a transformer inside that balances the signal. When using it, I received blurry images from surveillance cameras. I use Lorex MPX cameras. It's 2k and they work great with traditional Siamese cable. However, trying to use UTP or even 18G cable gives a blurry picture. Bad product. I do not recommend buying. There's a reason they're so cheap.
Blink Outdoor Camera Wall Mount Bracket Set - 5-Pack Plastic Protective Housing and 360° Adjustable Mount with Blink Sync Module 2 Outlet Mount - for Enhanced Blink Outdoor Indoor Camera System (Black)
11 Review
Wasserstein Solar Panel 13 1Ft Compatible Camera & Photo and Video Surveillance
11 Review
Blink XT/XT2 Camera Wall Mount Bracket - 360° Adjustable for Indoor/Outdoor Use - 3 Pack
11 Review
Versatile Adjustable Wall Mount with Enhanced Security for Both Indoor and Outdoor Use
11 Review