AUTOOL Digital Differential Manometer Hand-held Air Pressure Gauge Negative Vacuum Press Gauge Meter

AUTOOL Manometer Professional Air Pressure Meter with Two Differential Pressure Gauge Input Ports HVAC Gas Pressure Tester This instrument is designed with imported pressure sensors, high precision ADC and low power consumption MCU. It features professional digital pressure gauge with high precision, wide range, high resolution, large screen display and indoor temperature measurement; with a single channel it is possible to quickly measure the current detection pressure value (relative to the current atmospheric pressure), whereas the dual channel allows simultaneous detection of the pressure difference between the two detection ports (P1-P2). Product Precautions： ● The instrument should be kept away from vibration sources, strong electromagnetic fields and areas with drastic temperature changes to avoid inaccurate data caused by vibration and electromagnetic interference, temperature fluctuations, etc. ● When measuring corrosive and toxic gases or liquids, please pay att