... 20mA etc. 4.Alarm:2 relay PS4812 Series Programmable Intelligent Pressure IndicatorIntroduction PS4812 series programmable intelligent digital pressure indicator ... 50 CAmbient humidity<80%RHOrder FormatExample1: PS4812-035-206-311 Product Model "PS4812",Programmable Intelligent Pressure Indicator. Pressure Range ... codes are the default values. Example2: PS4812-050-124-205-311-433-5H-7R Product Model ...