±0.5% Full Scale Accuracy, NEMA 4X Housing.4 digit digital display will reduce the potential for errors in readings by eliminating parallax error commonly produced with analog gauges.Battery powered and has an auto-shut off to conserve battery life.Battery life, on average, will last 2000 hours.A 4 button key pad allows easy access to Features without the need to work through complex menus or difficult key combinations.Features include backlight, peak and valley, tare or auto zero and conversion of the pressure units.