yes its a easy job just be carefull of the mains when you open the panel there might already be a battery there if you are not sure which 1 to get just look at the one thats in now and take it with you to an alarm shop but check the fuse first it could say batt check the quick blow fuse and if its gone i doubt you will need a new battery you will just need a fuse if its not gone then you need to get a new battery
and the alarm will sound when you remove the cover
let me know how it goes
Death
and p.s buy some quick blow fuses from your local alarm shop just for future use
Death
February 2010