This sleek device enables you to pre-set your normal tyre pressures, and upon engaged full contact with the valve, will check the pressure and indicate any over or under inflation with a warning light. The built-in light allows for use at night.Green LED indicator = in good conditionYellow LED indicator = under inflationRed LED indicator = over inflationOperating Temperature: 32f-122f (0c-50c)Measurement Range: 5psi-99psi (min-max)Powered by: 1 x CR2032 lithium cell (included)LED, LCD back light: 2 x AAA batteries (not included)
