The XX16A includes the XC18A camera and XM13A remote controlled power supply.
The XC18A is a very small and compact color video camera with built-in 2.4GHz video sender. You can attach it to a wall anywhere you want to monitor. The XC18A transmits video and/or sound to a 2.4GHz receiver (sold separately) which is connected to your TV located anywhere in your home (up to 100ft. away).
The XM13A power supply lets you turn the camera on and off remotely, from remote controls.
X10 remote controlled indoor / outdoor color video camera with built-in 2.4GHz transmitter.
From the Manufacturer
The XCam2 is a tiny, yet powerful wireless video camera that you can put anywhere and transmit live COLOR video to any TV, VCR or PC in your home! It combines an analog video camera and 2.4-GHz transmitter into a single ingenious unit that takes only minutes to set up! Use it to monitor your front door, kids room, baby nursery, backyard or just about anything!
The X10, a video camera that can transmit LIVE COLOR video up to 100 feet. You can even add multiple cameras and scan between them like changing channels on your TV! Because the camera is wireless, simply place a camera in any area you want to watch over. Plug the Video Receiver into your TV! The signal is automatically sent to your TV (or VCR if you want to record the action)