Elitech Pro Blue Refrigeration HVAC Digital Pressure Gauge for 87+ Refrigerants with Backlight -14.5-500 PSI 1/8'' NPT

* Stable and Reliable Sensor: Use temperature-compensated pressure sensor, temperature drift not exceeding ±0.04%FS/℃ * LCD Screen& Blue Backlight Display: Partition display for different measurements, direct readings for all measurements. * Various Refrigerants Options: Built-in 87 types of normal refrigerants PT comparison table for your convenience. * Zero Function: If deviation occurs at zero point, use ZERO button to zero out and correct the system. * Two overload warning indications: The screen displays ALARM or if the overload is too high, the ALARM & backlight will flash simultaneously. 24/7 US Technician Support via Email and Phone.