This auto sequencing receiver can be operated completely by the remote control included. You can have the receiver automatically switching between up to four camera views or alternatively select which camera you wish to view by using the remote control to "lock in" to that particular channel. It only takes a minute to setup. Simply place the cameras (sold separately) at the location you wish to observe & plug the receiver into your TV or VCR. It can also be plugged into a PC with an analogue video capture card or via a USB (Universal Serial Bus) adaptor. Receives both video & audio 4 channels Palm size IR remote control Receives up to 100m line of sight or up to 30m through obstructions Mains powered with adaptor supplied