Required a burglar alarm system that was efficient, easy to operate whilst not requiring wiring.   We had chosen a Visonic Alarm System and David Cole gave excellent advice regarding the best type of sensors to use & their location.  He came at the agreed time & fitted all the units without causing any mess.   The operation of the alarm system was fully explained but he is only a phone call away if we have had any issues.   Annual maintenance has been available to give us peace of mind.  All in all a 1st rate job