NAPCO Firewolf Photoelectric Smoke Detectors
Firewolf advanced photoelectric smoke detectors by Amityville, N.Y.-based NAPCO utilize two bicolored LEDs for indication status. In normal standby condition, the LEDs will flash green every 3 seconds. When the detector senses that its sensitivity has drifted outside the UL-Listed sensitivity window, the LEDs will flash red every 3 seconds. When the detector senses smoke and goes into alarm status, LEDs will latch on red.
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