How to Install Window Sensors in Your Home

Windows and doors are the two most common points of entry that burglars use to get into your home. Although nearly all home burglar alarms wire the door, setting up window sensors is a less common practice. You can save money on these sensors by installing them yourself. Although working with an electrical system can be a little intimidating, no single step of the process is particularly difficult.


  1. 1
    Choose which windows in your home you want to make part of your home security system. Buy one sensor for each, after confirming that a particular kind of sensor is compatible with your burglar alarm system.
    • You don't need to cover all your windows. Windows that are plainly visible from the street, and windows up off the ground floor, usually don't need a sensor. Neither do windows that are too small for a burglar to fit through. Windows that are stuck or painted shut may need coverage, since a burglar can choose to break that window.
  2. 2
    Read carefully all instructions and warnings that come with the window sensor. Different brands and models install in different ways. If the manual conflicts with anything you read here, defer to the manufacturer's instructions.
  3. 3
    Attach the window sensor to each window using double-sided tape. Corners are good places to mount sensors, because they obscure less of your view.
  4. 4
    Plug the connection wire into a sensor. Run the wire to your control panel, either along a corner of your wall or through the wall if you are able. The connection wire usually comes with a window sensor kit. If not, you can buy it at any electronics store or home improvement center.
    • Repeat this step for each of the sensors that you want to install.
  5. 5
    Locate the correct input points for window sensors in your burglar alarm's control panel. Plug the end of the connection wires into the input points.
  6. 6
    Power up your burglar alarm and test your installation by opening each window in turn. If you have a live-response service with your home security system, it's a good idea to call ahead and let them know you'll be doing this.


  • Although window sensors can help improve your home security, you should never count solely on a burglar alarm to protect your home. Other good practices regarding windows include trimming trees away from top-floor windows, planting sharp and low-lying bushes below windows and barring windows with peg locks or dowels set in the glider path.


  • Window sensors do you no good unless they're activated. This is especially important during summer months, when they might be left open throughout the day.

Things You'll Need

  • Window sensors
  • Double-sided tape

Sources and Citations

Article Info

Categories: Doors and Windows