SSI TECHNOLOGIES MG1-9V Series Media Gauge Digital Pressure Gauge Sensor with LCD Display, 5000psig Operating Pressure, 9V, 1% Accuracy, 1/4-18 NPT Male Process Connector Type Typical Applications: General Purpose, Test. Process Control, MRO, Water, Compressors, Refrigeration; Fuel Cells; Pumps; Hydraulics; Spraying Systems; Pneumatics; Flow; Robotics; Agriculture; Hydrogen Storage NIST traceable certificates available Chemical Compatibilities: Any gas or liquid compatible with 316L stainless steel. For example, Sea Water. Salt Water, Motor Oil, Diesel, Hydraulic fluid, Brake Fluid, Water. Waste Water. Hydrogen, Nitrogen, and Air. LCD Display Battery Saver Mode: MG1-9V automatically powers down after 3 minutes. To power on the unit: Press the ON/UNIT/OFF button. The MediaGauge MG1-9V has a battery saver mode and will automatically shut off the display after 3 minutes