The new digital tire SMART Charge unit from Semmco is a premium indoor and outdoor electronic gauge. Key features include calibrated accuracy of +/- 2 psi up to full scale reading of 350 psi and 350 psi safety relief valve. Robust, lightweight, accurate, fast and versatile with a backlit LCD screen for ease of use both day and night, the SMART Charge comes with a 2m hose and a range of tire valve connectors are available to suit all customer and airplane inflation applications.