... power supply 3) 4 LED display 4) Alarm gauge PG802E Digital Pressure Gauge FEATURES:1. Large screen LED display, easy to read ... supply7. Measuring hydraulic oil, gases, liquids, fluid, etc8. Pressure sensor/ transmitter with LED display9. 304 or 316 Stainless steel ... limit and lower limit alarm control output can be set freelyMeasured medium: non-corrosive gas or liquid, water, oil, etc.Pressure range ...