When you've hit the reset button, it retracts into the unit. Have it be maybe 2 or 3 feet long so you don't need a ladder.
Could also have it double as a battery warning indicator, drops down when the battery's dead. Maybe even have it lower the battery so you never need to get on a ladder.
You could have it shoot the dead battery at your head as you walk by so you don't forget to change it.-- doctorremulac3, Sep 02 2020 Inspired by this. Easy-reach_20smoke-alarm_20cutoff [doctorremulac3, Sep 02 2020] Fire Alarm Fire_20alarmSmokin'... [8th of 7, Sep 03 2020] Entire alarm unit could detach from the ceiling and crash to the floor for easy battery replacement [+]-- sninctown, Sep 02 2020 I like that. Or just drop on the heads of the fleeing people to motivate them to get out.-- doctorremulac3, Sep 02 2020 Yes I was imagining a unit that you throw at the ceiling to install, it would have spikes or somehting that grabbed into the ceiling, but when it went off or the battery needed changed it would let go and drop to the floor. You press the button and chuck it back up. But that all distracts from the true genius of this idea so [+]-- pocmloc, Sep 03 2020 Patrolling drone smoke detector ?-- 8th of 7, Sep 03 2020 Petrol in the sprinkler system linked to the smoke alarm. Just to justify the evil laugh idea.-- xenzag, Sep 03 2020 Prior Art <link>-- 8th of 7, Sep 03 2020 random, halfbakery