Here is some general Information about this units use this as reference only.
Power Source:Battery port for use with optional 14.4V battery.AC/DC operation. Monitor System:High-resolution monitor.Power on/off button with step function dimming.Splash-resistant case with built in sunshade.Video In/Out jack.Power indicator light.Interconnect cord. Camera System:Scratch-resistant, debris-shedding, flush-mounted sapphire lens.Integrated transmitter.Durable stainless steel camera head assembly and tapered spring assembly. Reel:100' of push cable.Debris-capturing, rotating drum with mercury-free slip ring.Counter to display distance on monitor in feet and inches. Frame:Rust-resistant roll-cage frame.Skid-resistant feet for stability.