Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: how many feet of cord can u run frombox to camera
Document: perfect for extending many cables that were not long enough. they helped me to save money and run to the store to buy a longer cable...I install cameras for a living...
I needed a few of these for my cameras had to put a 150ft and 80ft camera cord together. Worked great and still does!
I need connector to run my camera to the backyard.This was what I was looking for. It's working. The picture quality doesn't change much with this long cable.
I bought this at the same time as my Swann SWDVK-825504 system since I did not know how long a cable run I would need to install my cameras. Fortunately, the VideoSecu 150 ft cables were more than enough for my home and able to bridge the distance from camera to DVR.The Swann system came with 60 ft cables so, I used one of these adaptors on two of these cables just to see if it worked.
Had to connect  power cord and needed additional cord the one that came with unit wasn't long enough. Worked out great would order from again.
I have no issues and it's been months since I hooked up a 100ft cord to an existing 60ft cord. All my 8 channels are working great. Thanks!
Need these gizmos to make the video cord longer with the original cable that came with the OEM. With out these I would have to made connection by stripping the wire and solder them together.
Only used a couple but they work as well as need to. I have used to run longer lines than the manufactured lines and there does not appear to be any quality loss!! !
I bought these to have for my cam systems I  am pleased to get so many for a good price. My friend needed a couple too so I gave him some. They're Great!
As a professional CCTV Installer, I have used these adapters in many installations and have had no complaints. They work exactly as advertised and are good quality and price. A+ product.
Answer: The specs say, if you go over 60 feet, you need a seperate power supply for the camera.  I have ran almost 75 or 100 feet wiyth no problem.