Before you break your hammer shaft ( which will cost more to replace than the sterlin) there's two sides to any wall so this wall... What regarding alarm equipment is mounted on either side of this wall?,because you not say if it a tamper alarm or full alarm condition.
Can you see what i'am saying here ????,and don't be alarmed,
You tell us nowt and expect an answer.... Get the hammer and don't forget to wear eye protection,
Be safe :P
e manno
April 2013