HMG1 and HMG6 hand-held pressure gauges measure differential, opposite and relative pressures in air and non-corrosive gases. Both models have a 3.5-bit LC display with a graphic height of 12.7mm. The signal can drive 0-1V analog output (HMG1-1, HMG6-1 type). The pressure gauge has high reliability and accuracy. They run on 6F22 9V batteries. The battery power control displays "Low power" on the display. Pressure overload is indicated by the red LED on the left edge of the LC display.