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■ On surfaces that are usually warmer or colder than the rest of the room. Due to the
temperature differences, smoke or heat may not reach the alarm.
■ Next to or directly over heating devices or air-conditioners, windows, wall vents, etc.,
which change the direction of air flow.
■ In very high or inconvenient areas (e.g. above staircases) where the alarms are hard
to reach (for testing and silencing purposes).
■ Position the alarm at least 1 m away from dimmable lights and their wiring, as some
dimmers can cause faults.
■ Position wire-linked alarms at least 1.5 m away from fluorescent tubes and lay the
cables at least 1 m away, as the
device may be impaired by electrical “interference”
and/or flickering.