Hopefully this will clear up a lot of things. A lot of Equipment has a Range of use, this will end up being really long if we get into every piece of equipment and the range for each, let's just say Camera's and Video Camera's have a longer range than most other equipment. Lets also say the range on most other equipment is no farther than 20ft. this is not accurate but a good basic range to go buy, personally with most equipment I like to stay within the 10ft. range all but Camera's that is, sometimes you have to reach out and touch something at a distance. lol