The SEA-C101-100 not only connects your cameras to your DVR, they also serve as a power source; making installation that much easier. To extend the SEA-C101-100, just use included connector (coupler) with other end and connect them together. You can extend up to 300ft without problems. Please note, if you extend beyond 300ft, there is a slight chance you might lose some signal with every additional connection.
BNC M/M Coupler Included
Siamese Type BNC Video/Power Cable
Compatibility: Samsung:SEB-1020R Surveillance Camera