Digital Micron Vacuum Gauge - BELEY HVAC Vacuum Test Gauge with 13 Units Electronic High-Precision Negative Pressure Gauge of 7/16 -20UNF Interface 1/4 SAE
- ...normal mode and monitoring mode. The default mode is normal mode, short press "DIF key" to enter monitoring mode. In monitoring mode, you can set timer and other operations. The item box contains 1* vacuum gauge (without battery), 2* extension connector. BELEY provides you with 1 year warranty and 24 hours customer service..