This guy should be in every installer's bag.  This handy little monitor saves hours of running between a camera and the DVR checking for alignment and focus.  Plus this monitor has a built-in carrying case with extra padding to protect your valuable investment! 

Kit includes:
(1) 12VDC Power supply for charging battery pack
(1) 12VDC Power supply for power LCD monitor (not required - use in cases where you don't have time to charge the battery pack)
(1) Pigtail cable for connecting to the back of a camera (twist BNC for video / RCA for audio)
(1) RCA cables for connecting LCD screen to DVD player (audio and video ports)
(1) Nylon straps to give you 'hands free' movement while adjusting cameras
(1) Nice zippered bag containing battery pack, LCD screen.  Bag contains very well thought out nylon compartments for holding LCD screen and misc. cables