by this alarm guy thinks its crap too:-)and by the way,i try each bell box that comes out,just once to see if its any good,not on a site,but i bench test em,you can tell just by looking at the electronics and the make up of the box,a good bell box may cost a bit more,but,you will save in the long run,as the guys on here know very well,but the diy brigade dont look at quality,just cost.
gts, December 2010