Just in from Japan the new generation of GReddy Sirius gauges are far ahead of the competition in terms of technology quality design and reliability.Using the daisy chain method like many other high end gauges the GReddy Sirius gauges require a central unit the Sirius Control Unit. All of the sensors connect to it and only one cable leaves the unit to safely power all the connected gauges. Installation is made easier neater and more reliable and you can also quickly add extra gauges.The Control Unit also controls the settings for the optional Sirius Vision display screen easily accessible and modifiable. It can support up to 3 Sirius Vision display screens and 8 GReddy Sirius standard gauges. All required accessories for installation are included (connectors cables etc.).Thanks to Control Unit you can configure alerts (Warning function) such as low oil pressure high water temperature boost pressure that reaches critical level ... These alerts are both visual and audible (red light on the gauge + buzzer) while maximum readings can be saved re-used and controlled at any time (Peak Hold Memory function).