First Alert Red or Green Light Flashing With No Sound
First Alert says a blinking or steady light with no audible alarm sound typically indicates the unit is receiving power.
Alarm LED IndicatorsRed or greenBlinking or steady with no sound
Brand hub
First Alert says a blinking or steady light with no audible alarm sound typically indicates the unit is receiving power.
Helpful next guides
Browse model-specific light meanings and common status LED fixes for this brand.