e manno,i took a look at a yale ,wont call it an alarm system,today,i removed the one fixing screw on the bell box,it went off,but,not reg on the control panel also the wires of the sounder are open,i.e.you just pull or cut the speaker wires,they are exposed ,what a bit of trash ,powered by 4 "d" torch batteries,only looked at it coz was for a friend,terrible my friend what some people buy to protect their home,they called yale who told them we don't have engineers in Scotland to fix your system ,they not tell them that when they took her money
gts, March 2014