Feature:1. Main Function: Helps to protect your by cooling down after driving. Greatly improving the combustion efficiency of the engine, save a certain amount of fuel consumption.2. Premium Material: The timer is made of ABS plastic, ensuring excellent compact size and light weight, wear resistance, not easy to age and durable.3. Special Design: Allows a and stylish installation virtually anywhere inside the car. The unique multi angle joystick button allows easy navigation through the many feature menus.4. Features: Automatic countdown function to ensure the most optimal countdown configuration of the widest range of vehicles that the user can choose from 144 different configurations.5. Multifunctional: First time to utilize O2 sensor voltage to calculate the necessary amount of after idling time automatically. The voltage, the oxygen content O2 and the air fuel ratio A/F can be displayed.How to Use:Black wire connects to negativeRed wire connects to positivePlug and PlaySpecification:Item Type: Auto Turbo 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 optimum 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