[villagetinker]

Smoke detectors are typically located to be able to detect a fire as quickly as possible, so high to the ceiling is an expected location. Also, the detectors (I have seen) are AC powered with battery backup, and designed to trigger the other alarms so that if you are in another room you will hear the alarm and have time to get out.
So to answer your question, you will need a licensed electrician to move the smoke alarm, but remember, the lower you place the alarm, the longer it will take to trigger in the event of a real fire.
We had our go off a few times, we learned that using the vent fan (typically in the microwave or range hood) cut down on false alarms significantly.
Just my humble opinion, hope this helps.

It also occurred to me the Fire Companies are very helpful in this area, you might want to call the NON EMERGENCY number and ask them if they could provide some ideas, as you do not want to compromise the safety of you and your family.