(916)672-2660 The video cameras can also differentiate in their tech specs, some cameras can transmit in black and white or color. Many cameras use wireless networks to transmit signals to receivers or computers, while some still work on old-fashioned closed circuit television system. While, Resolution of images vary as does movement capabilities and adaptability. Some cameras are consistently monitoring a room, while other hidden cameras are activated by motion detectors. Most of these nanny cams don’t include audio. However, if sound essential and you cannot live without it, few cameras exist that make your selection a top priority. The recording and broadcasting capabilities of these hidden cameras diverge as well as we discussed before. There is so much variability in Nanny Cams that they need to be carefully researched to fit the needs of your family.