Where should people who close their bedroom door at night place their smoke detector?

Placing a smoke detector inside the bedroom is the most effective choice for ensuring safety. Smoke detectors are essential for early warning of a fire, and positioning one in the room provides immediate alertness during the night when occupants may be asleep. This is particularly important in a bedroom setting, as having the detector closer to potential sources of fire increases the likelihood of detecting smoke before it becomes a serious threat.

Additionally, when a bedroom door is closed, smoke may be contained within the room, which makes an in-room detector crucial for alerting individuals promptly. In contrast, detectors positioned outside the room, or in other locations such as on a wall or above a window, may delay the alarm's response time, especially if the door is closed, potentially preventing occupants from being warned in time to respond effectively.