Industrial Covert Unlimited is in its 20th year of operation. CU1.COM has been up since mid 1999. Great security & CCTV products and people who answer the phone!
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COP-USA GB01 Coaxial & Passive Ground Loop Isolator
The COP-USA GB01 is a high quality ground loop isolator meant to provide protection against unwanted ground loops and video interference.
The GB01 ground loop isolator provides passive protection (meaning no external power source necessary), and it works wonders in helping to eliminate unwanted signal interference between DVRs, cameras, and more.