if you wish to kill it completely,you have to remove the mains power feed,plus the standby battery,but,there,s always a but,the bell box if fitted to standard will sound for two or three hours,(at a reduced level)one way to stop this is to apply 12 volts to the power feed from the panel to the bell box,you can use the battery,this will save you opening the bell box and disconnecting the standby battery that lives there.
gts
August 2010