New Logitech Master System with Indoor Camera; Clock Camera (spy) add-on; and Outdoor Camera add-on. Master system can support a total of 6 cameras. All software and wiring included. Each camera plugs into a standard household electrical outlet to transmit any movement detected in front of camera. Each camera's video signal is communicated via household electrical circuit to a receiver that connects into a PC. Software provides setup, schedule calendar, and view of each camera on PC monitor. Camera's detect motion and record activity. Video writes to PC hard drive for permanent record.