The Oxigraf Hazardous Area Remote Indicator Light is certified for use in Class 1, Division 2 hazardous areas. It has four colors

• Green (Indicates System OK, no malfunctions)
• Amber (Indicates a warning condition requiring techician attention)
• Blue (Limit B exceeded, calibration recommended)
• Red (Limit A exceeded, potentially hazardous low-level of oxygen)

If multiple conditions exist simultaeneously, the colors will alternate. The lights are long-life LED's for reliability.