When you sleep, your sense of smell also sleeps. If a fire starts, toxic fumes can overcome you.
Photoelectric smoke alarms see smoke and will alert you early, so you can escape.
Working To A Standard, Not To A Clock
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When you sleep, your sense of smell also sleeps. If a fire starts, toxic fumes can overcome you.
Photoelectric smoke alarms see smoke and will alert you early, so you can escape.