The First Alert Photoelectric Smoke & CO Alarm Slim provides reliable 2‑in‑1 protection against both smoke and carbon monoxide in a compact, low‑profile design. Using photoelectric sensing technology, this alarm is optimized to detect smoke from slow, smoldering fires while helping to reduce nuisance alarms. The slim profile design is about half the depth of a standard alarm, allowing it to blend discreetly into any interior. Battery operation makes installation quick and easy on walls or ceilings, without the need for wiring.
