Premium Series Gauges (Peak Recall/warning) Blue/White 52mm(2 1/16") Premium Gauges feature a fully programmable Warning function and have a Peak recall ability. "We Don't Need No Stinkin' Controller" 52 mm (2 1/16") Stepper Motor Driven 270°LED Display. These are fully programmable to allow you to set the warning feature to either beep or change color (or both) once the gauge reaches your pre-set limit. 270° dial sweep provides quick one glance accuracy. Track tested and race proven these gauges use precision electric senders to keep hazardous fluids out of the passenger compartment. All of our Premium Series gauges perform a dramatic opening ceremony with a full pointer sweep each time the vehicle is turned on AND off. These are very easy to use, all programming is done from the front push button! Wire up the first gauge for power and daisy chain the power to each gauge as needed! As only Prosport would do, the Daisy chain power leads come with them! Nothing more to buy. These Gauges are Super Thin! Perfect for tight mounting options:Less than 1.25" Behind the Bezel (Including the studs) Don't trust your factory gauge for important monitoring of engine functions. By the time your factory idiot light comes on the damage is already done. Monitor you engine functions with one quick glance and notice any problems before it is catastrophic. Save your engine, set your warning function to go off before you loose all your oil pressure! Thats right this gauges warns you once your oil pressure drops below your set limit. (0-150 PSI includes Sender, mounting Cup, Visor/Hood, quick connect pigtail wiring, Decal and Instructions)