1The refrigerant meter and the vacuum gauge are switched to each other, which is convenient to use. 2Built-in database of 82 refrigerant pressures and corresponding temperatures. 3Can measure vacuum pressure and indicate the degree of vacuum as a percentage 4With battery low voltage prompt, the battery life is 30 hours 5Suitable for WK-6881H, 6881L, 6882, 6884Features: 1. The refrigerant meter and the vacuum gauge are switched to each other, which is convenient to use. 2. Built-in database of 82 refrigerant pressures and corresponding temperatures. 3. Can measure vacuum pressure and indicate the degree of vacuum as a percentage 4. With battery low voltage prompt, the battery life is 30 hours 5. Suitable for WK-6881H, 6881L, 6882, 6884 Specification: Condition: 100% new Item Type: Digital Pressure Gauge Measuring Pressure Unit: Kpa. Bar. Psi. Torr. Kg F/cm2 InHg. MmHg Measured Temperature Unit: / Measuring Range: Vacuum: -101Ka-0kpa, Pressing: 0Kpa-6Mpa, Refrigerant: -101Kpa-4Kpa Minimum Value: 1Kpa Sensor Accuracy: 0.5% Overload Limit: 100Bar, 10Mpa UsingRange: -20-60 Interface: 1/8inNPT Battery: 9V Battery(not included) Package List: 1 x Digital Pressure Gauge