The BW 3000 Camera features a Digitally Encrypted System for Secure Digital Crystal Clear monitoring. It protects against eavesdropping and hacking for added Peace Of Mind. When combined with the monitor system, it enables you to see and hear your child, even during the evening with Night Vision. This optional camera contains a multipurpose adjustable clamp that simply enables the camera to secure to a shelf or stand freely on a drawer unit, out of reach of baby/children. Each system can be expanded to accommodate 4 cameras.