Defi Link-BF Meter-Tachometer 11000 rpm 1.Brightness adjustment,2.standalone guage3.no control unit requiredUniversal Tachometer 80mm 11,000 RPM BluePackage includes :1.Racer Gauge 80mm Tachometer gauge (blue)2.indicator lamp3.switch unit4.wiring and fittings5.mounting band and stand. The BF Tachometer in 80mm diameter tachometer comes in 9000rpm or 11000rpm scale reading. Although this tachometer can operate by itself without using control unit, it still features the same famous Opening and Ending ceremony as Link Meter BF series. If the Link Meter BF series gauges have been already installed in your car, this tachometer also synchronizes its needle movement at the Opening and Ending ceremony if the power is provided from the same location.Features:-Brightness adjustment: 11 stages of brightness, 5 stages in the daytime and 6 stages at night.-Wide-angle scale is used at the idling range 0~3,000RPM.-The scale is fitted to recent engine power band and linear scale is used from 3,000RPM to 11,000RPM.-The scale is compressed to acquire great visibility and ease of use.-Dual warnings of light and buzzer-Two customer-defined warning RPMs can be set.-When the RPMs are exceeded, the warning LED blinks/lights up and the warning buzzer sounds.-The exclusive large-sized indicator which lights in green and red enhances the visibility of warnings in addition to the warning LED in the gauge.-Peak memory function-Detachable switch unit-The gauge is clinched by using the exclusive mounting band and back case. Wires can be stored in the back case neatly.-By having the Defi rev adapter built-in, the tachometer works on vehicles with DIS (Distributor-less Ignition System)