This past Saturday morning, at 2 AM, I was awakened to a man’s voice coming from my hallway, saying with urgency, “Por favor cambie las pilas en el detector de humo! Por favor cambie las pilas en el detector de humo!” Although startled, I was instantly put at ease once I saw my dogs weren’t reacting. Then I figured it out; it was the smoke alarm telling me to change the batteries, in Spanish!
From FEMA’s web site: A properly installed and maintained smoke alarm is the only thing in your home that can alert you and your family to a fire 24 hours a day, seven days a week. Whether you’re awake or asleep, a working smoke alarm is constantly on alert, scanning the air for fire and smoke.