User Manual
Installing the Door/Window Sensor
This Accessory is installed as part of the Intruder Alarm.
Questions about the Door/Window Sensor?
Click Getting started with the Door/Window Sensor.
Where to put the Door/Window Sensor
The Door/Window Sensor detects whether a door, window, or other thing is Open or Closed. The sensor has
two parts - a larger part, into which the battery is placed, and a smaller part (which is actually a magnet). The
Door/Window Sensor is designed for use indoors but it can be used on external windows or doors, providing
that the larger part is normally indoors. You can use the Door/Window Sensor to check whether ground floor
exterior doors and large windows are open or closed (especially helpful when combined with AlertMe's
warning if you leave your home set to "Away" without closing everything!). You might also use an
Door/Window Sensor to check that fridge and freezer doors are properly shut, or to monitor who is opening
the biscuit cupboard in the middle of the night, or anything else you can think of!
The larger part of the sensor is usually placed on the door or window frame, and the smaller magnet placed on
the door or window itself; the two parts must be parallel to each other, and as close to touching as you can
place them, without stopping the moving part from opening smoothly. Each part of the sensor has a pair of
little lines on one side; you should install the sensor with those sides with the little lines next to each other.
This is illustrated in the bottom half of this page. If your door or window frames are made of metal, which
reduces the wireless network performance, make sure you find a position where the Door/Window Sensor
light continues to flash happily. Moving the sensor by just a small distance along the window or door frame,
such as 10cm or 3 inches, may improve the wireless network reception enough. Try to leave at least a
centimetre or so of empty space at either end of the Door/Window Sensor.
If you have UPVC or other windows with bevelled or angled edges, click here.
There are general guidelines about positioning AlertMe Accessories here. For more information about the
Door/Window Sensor, click here.
Repeat the following instructions for each Door/Window Sensor you have. It is a good idea before you start to
think about where you will install each of your sensors to best secure your home.
Positioning the Door/Window Sensor in your home
All Door/Window Sensors which you have not yet set up should currently be near to your Hub, and their lights
should be off.
On the walkthrough page on AlertMe's secure website you should now be able to see all the Accessories you
have not yet set up, including the Door/Window Sensor you are about to install. If you click a Door/Window
Sensor icon, you should see the light on one of the Door/Window Sensors near your Hub start to flash on and
off regularly. This is the one to install now.
Take this Door/Window Sensor (both parts!) to where ever you wish to put it. As you move around your home,
the light on your Door/Window Sensor may continue to flash, or the light may start to blink twice every few
seconds. When the light is blinking, that means that you are not in a good location to install your
Door/Window Sensor, as the radio signal is not good enough. Don't panic! There are two reasons the light
might do this. One is that you are in a slightly bad spot for the wireless network; you may find that moving the