Hello! I found you and your post by using GINAbot. Are you a security and/or insurance professional? I am a residential security expert and ASIS board certified Physical Security Professional. Physical security of homes is my main passion, so perhaps we share the same?
I do not recommend people have third party monitored alarm systems. Yes, absolutely, have multiple layers of alarms, but do not set yourself up for a surprise visit by people pointing guns at you or your loved ones. Here in the USA at least, too many kids and dogs have been murdered that way.