# Single button control and red LED numerical display simplify operation and improve visibility. # 5 time ranges selectable between 1, 3, 5, 10, and 30min. Maximum timer duration is 30 minutes. # Accurate time duration can be selected by manual setting. # Handbrake detective safety circuit # High capacity relay # Timer operation stops under unstable conditions caused by low voltage of a battery, etc. # Compatible with all HKS Turbo Timer Harnesses