Spectrex 20/20MU - Mini Flame Detector - Manual (Page 21)

Spectrex Inc. - SharpEye TM ML & MU Flame Detector Manual – TM 767100, Rev. A, April 2005
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4. Operation
4.1 Visual Indications
One 3-color LED-indicator is located in the detector front window:
Detector Status LED color LED mode
Fault, BIT Fault Yellow 4 Hz flashing
Normal Green 1 Hz flashing
Warning Red 2 Hz flashing
Alarm Red Steady
Figure 6: 20/20ML LED
Figure 7: 20/20MU LED