Elitech SMG-1L Refrigeration HVAC Digital Pressure Gauge for 87+ Refrigerants with Backlight -14.5-500 PSI

• Six units switchable: MPa, kPa, bar, psi, kg/cm², cmHg
• Pressure measuring range: -0.100 ~ 3.448MPa (-14.5-500 psi)
• Resolution: 0.5psi
• Accuracy: +0.5%FS
• Sampling Rate: 1s
• Temperature Unit: °C/°F
• Battery: 3 AAA batteries
• Battery Life: 6 months

Operation

• Backlight: When the gauge is ON, press the power button to light up the backlight.
• Max/Min Memory and Clear: Light up backlight and press power button to display MAX symbol & value, then hold ZERO button until 8888 shows on screen, to clear current Max value.
• When backlight is on, press power button twice to display MIN symbol & value, then hold ZERO button until 8888 shows on screen to clear the current Min value.
• Temperature Unit: Press and hold SET button until AUTO shows on screen. press power button once until C-F shows, then use SET or ZERO button to switch between ℃ and ℉.
• Pressure Unit: Press and hold SET button until AUTO shows on screen. press power button twice until UNIT shows, then use SET or ZERO button to switch between pressure units.