Digital display with solid state circuitry, +32 degrees F to 120 degrees F ambient temperature. 10 minute automatic shut off battery saver.
Saves the last vacuum read out after shutdown.
300 PSI maximum pressure
Vacuum range is 25 to 12000 microns.
It will read in 7 different units: microns, PSIA, InHg, mBARS, Pascals, Torr and mTorr.
The touch button are sealed to protect against spills and dust.
One 9V battery is required but not included.