“do cameras need seperate power from coax cable,and can extra lenth be added to the coax”
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Hello, Thank you for reaching out to us with your question. The coaxial cable will run the power and video line. One end of the BNC cable will connect to the supplied power adapter. The longest recommend run is 300 feet. Please let us know how we may further assist you, Thank you. JV Swann Customer Support
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