Spectrex 20/20R - Single IR Flame Detector - Manual (Page 16)

Spectrex Inc. - SharpEye TM Single IR Flame Detector Manual – TM 20/20R, Rev. A January2005
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4. Operation
4.1 Visual Indications
Two LED-indications are located in the detector front window:
i. Power LED (Yellow)
Normal - LED ON
BIT failure - LED flashes (4 Hz)
ii. Alarm LED (Red)
Normal - LED OFF
Warning - LED flashes (2 Hz)
ALARM - LED ON
Figure 4: Indication LEDs