that system has a display for all 4 bags and i think most also show tank pressure as well. check youtube for some videos. the ones ive seen are sweet looking BUT for the price its outta my reach!
tho if you want to hit switches for more fun I THINK ya should get a regular switchbox as they are more responsive.
it wont be a plug and play unless you also use the autopilots system i dont think. i believe it has its own valve body setup which is what is plug and play part. tho i dont see why you couldnt do some wiring and hook them up to normal air valves.
i would probably have both a normal switch box and this automatic unit and just put the two on a 3way switch. one way does auto, and flip in middle and its OFF for a bit of security, and flip down to use a manual switchbox.
of course ive also seen some cool looking wireless controlers which look pretty sweet. just gotta check out whats out there and see what people carry around your area or online.
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i like that auto unit BUT id prefer to have it as a stationary system. and ya cannt play with it to much as stationary unit. but to each there own its a decision youll have to make for yourself.
of course they also have seperate digital gauges for all air lines.
http://store.gaugemagazine.com/dakotadigitalairpressuregauges.aspx
those there make it real easy and they so small you can fit them in much smaller areas over the manual dual needle gauges!
id love to have one of those BUT im going with the 3manual gauges due to price.
ALSO you dont need seperate valves. the air lift setup like you showed above is ment for there valve manifold setups.
http://shop.airliftcompany.com/product/533276/27642/_/AutoPilot_Digital_Air_Management_System
they sure as hell make the installation look a hell of alot easier! since there is no 8valve seperate. some kits have all 8built into one large manifold. and others are groups of 4 so one manifold for front and one for rear. only downfall i have seen with manifold systems is there air line sizes are usually smaller typically 1/4 or 3/8 size.