I have had a Verisure Alarm now for over four years and am so pleased that l chose Verisure to protect my house twenty four hours a day. The alarm was installed with no mess within two hours including full instructions on how to use it. Piece of cake. Any person can use it. Every time we go away we can enjoy the time knowing that if anybody tried to break in we would receive a call from their people in the monitoring station, they would ascertain there was a break in, call the police, inform one of their guards and if any person is still in the house they would then employ ZeroVision which is a dense smoke so intruders can't see and want to get out. If anybody is looking for a complete intruder alarm with peace of mind l would suggest they contact Verisure at their earliest opportunity.