The Boundary alarm system is cleverly designed to benefit any home whatever the layout, because the settings and preferences are so diverse . The monthly subscription is cheaper than the rest, provides way more functionality options and allows me to stay within my budget. The one thing that could be improved is the 'Activity Alert' function. It's great that the activity alert allows you to detect motion via the motion sensor(s) when the alarm is off. However, if there is more than one alert, instead of listing them (via the app for example), an alert overrides the previous alert and the message/evidence is lost. Also thank you Boundry for your exceptional customer service. I look forward to further improvements along the way.