Elitech PG-30Pro Blue Digital AC Pressure Gauge -14.5~500 PSI
Pressure range: Red gauge: -0.100 ~ 5.515MPa (-14.5-800psi) Blue gauge: -0.100-3.448MPa(-14.5-500psi) Resolution: 0.001MPa; 0.5psi Accuracy: ±0.5%FS Sampling period:1s Temperature unit:℃/F Backlight time: The backlight will be off after 3s; 4s; 5s; 10s; or 15sasset in case of no operation. LCD screen with blue backlight; 50 x 26 mm Measurement units: MPa; bar; psi; KPa; kg/cm 2; cmHg Auto-off: If this function enabled the gauge will be off automatically after 10 (or 20; 30; 40 )minutes per your settings. You may also disable this function by setting it as OFF; i. e the gauge will be on all the time. Parameter settings: Auto off; pressure/temperature unit; backlight time PT table lists the pressure and temperature of 87 types of common refrigerants Battery: 3 AAA batteries Battery life: Approx. 1 year Low battery indication at a low battery level Operating environment: Temperature:-10℃~60℃; Humidity 35% - 85%RH