Specification:Item Type: Auto TimerMaterial: ABSDisplay: A/F value, O2 sensor voltage, battery voltage and countdown time display. Displays A/F ration as RICH or LEAN. Warns of extremely LOW battery voltagesManual Mode: Allow the user to preset desired idling times from 0 sec. to 10 minutes in 16 increments.Features:Automatically determine the necessary amount of after idling time.First time to utilize O2 sensor voltage to calculate the necessary amount of after idling time automatically.144 different settings to ensure the most countdown setting from the widest array of vehicle.16 way adjustment of countdown timing from 0-10 minutes.Fitment: Suitable for all vehicles with 12 volt switching power supply.How to Use:Black wire connects to negativeRed wire connects to positivePlug and PlayPackage List:1 xTurbo Timer1 x Controller Box3 x Cable Tie1 x Adhesive Paper