Turbo Timer, 12V Universal Auto Turbo Timer Device LED Digital A/F Display Parking Time Retarder (Blue Light), Blue Light

First Timer to utilize O2 sensor voltage when calculating count down time compared to timers that only use vehicle speed and RPM, this Timer can set the most accurate after idling time possibleO2 sensor voltage A/F value can be displayed, Displays A/F ratio, Automatic countdown featureUniversal fit for all vehicles with a 12 volt switched power source. Displays critical data such as O2 sensor voltage and Battery VoltageAuto Timer allows the vehicle to idle for a preset amount of time after the ignition key has been d, Can also be used to warm/cool the inside of the carThis Turbo Device is equipped with a parking Brake function which will keep the car from moving forward when idling in the countdown function