we use them at work all the time .cold cut so no hot works permit required.will cut almost anything steel /wood/plastic/alli.has a built in laser line on it very accurate .hope this helps.
caretech
do they not still do latching pirs ? been out of the game a few years so i dont know .not ideal i know but worth a thought. or getting into the realms of fantasy the old nicking the poss trick. (naughty me for even thinking about that)
most control panels use a negative bell trigger ie instead of sending a poss supply when the alarm triggers it sends a neg and the poss is always pressent. hope this helps