Perfection takes time, especially with something as complicated as wireless transmission. Our newest wireless monitor, part of our new SimpleSight Series was born from years of testing and multiple prototypes. This monitor can receive a 100' digital wireless signal which is guaranteed to work even at highway speeds. Users can pair this wireless monitor with our compatible wireless camera (RVS-50W) sold separately. ***Note: Make sure the antenna on the monitor is installed straight up, not to either side. ***Note: This system has one wireless input, channel 3. The RVS-DS55 allows you to make any CMOS camera wireless and connect it to channel 3. Channels 1 and 2 only accept wired cameras.