This is a very cool product with some minor downfalls. I'll get to the pluses first. 2 Cameras. You can add more than two cameras to the same system. The picture is in color and is awesome when you're in that 100ft range. The sound is a great quality when there's no interferance or low batteries. I recommend nice rechargeable batteries since it can run down if pretty quick when not using DC power. Now to the parts I don't like so much. It doesn't have the night vision so no picture in the dark. If you have a wireless G network at home, the cameras will take over the 2.4 GHz frequency that most Wireless routers run on. This means your wireless internet can't be used unless you unplug the cameras. In general I do like this product. I do wish there was night vision on it but it works great without since I have an X-10 run home. If you want to do the work, I do highly recommend a wired system over wireless. There's so many more benefits.