Door and window alarms are an excellent way to prevent you becoming a victim of burglary.
An intruder is probably going to enter your home through a door or a window. You’ve got lots of them and they’re relatively easy to get open using a screwdriver or a well-aimed kick in the case of the front door. So it makes sense to make it as hard as possible for a thief use these entry points to get into your home.
The good news is that an intruder is not going to spend hours trying to get into your home. He’s hoping to find an unlocked door or a window not fully closed or latched.
They will cruise a street and look for homes that have easy access to the side windows or doors at the back of the house – homes that don’t have a solid fence or a locked gate that prevent access to the side of the house or backyard.
After checking that a neighbor can’t see them, they will use a screwdriver or some pry bar and try to force a window or door open. It’s surprisingly simple to do as our apprentice, Tara demonstrates in this short video
So it makes sense to electronically protect our doors and windows.
Magnetic reed switches have been used for years to protect doors and windows.When installed correctly they are reliable and will rarely give a false alarm.
But they can only detect an intruder if the window is opened.But what if the window is not opened? In the videos above, the window had a reed switch installed, so if the alarm had been switched on (it wasn’t for this demo) the sirens would have sounded as soon as Tara opened the window.
So it makes sense to have an alarm that detects a break-in through a door or window.
So if we’re serious about detecting an intruder at the point of entry we need to not only detect if the door or window is forced but also smashed.
A degree of force is required to smash a window or break through a door.
A vibration sensor responds to this force and triggers the alarm immediately, achieving our aim of detecting the intruder at the point of entry.
With careful installation and set-up these devices are also very reliable and won’t cause false alarms.
This set-up all works fine when everyone has left the house for the day. But what if you want to have the doors and windows protected when you’re home?
When you and your family are sleeping for example?
Think about it for a minute: Everyone is in bed. You’ve turned the perimeter system on and you can sleep soundly knowing that you’ll be alerted to a break-in. But what if our intruder forces open at window at 3 o’clock in the morning?
Of course the alarm will sound and most likely scare the intruder away – the same as in the previous scenario.But think what that experience is like for you, the homeowner.
What would you do?
Rush to turn the alarm off?
Run to the nearest window to see what was going on?
Hide under the covers?
Other members of the household would also awaken and be confused. Not to get too dramatic about it but… with all that going on, would you even stop to consider that a burglar had ignored the siren and was now inside your home?
The point here is that a perimeter system that protects doors and windows is perfect for when the home is unoccupied but isn’t the best solution for when you’re sleeping.