Installing Door Sensors for a Home Security Alarm System

Door sensors are being used commonly nowadays because of its availability to detect the presence of someone who attempts to break-in the house. The sensors are based on an easy concept consisting of two elements, which include a trigger on the door where you installed the system and also a switch placed on the door frame. The installation of door sensors is also easy because you can even do it on your own without the need of hiring professional installer. Hopefully the information below might be able to help you understand the right way of installing the product.

What you need to do:

  1. Door sensors
  2. Screwdriver
  3. An electric drill
  4. A carpenter’s pencil
  5. Level
  6. Stud finder or drywall anchors

Home Security Alarm System


  1. Firstly you need to know that whenever your door is closed, the electricity of your closed circuit system would be able to flow through both halves. But when the door is opened, the current will stop following allowing the alarm to be triggered on.
  2. Meanwhile, the open circuit system is quite the opposite way that comes with trigger on the door handle in order to prevent electricity from flowing when the door is closed. But when the door is opened, the system will be releasing the magnet or trigger which in turn will send electricity right into your alarm thus setting it off.
  3. The next step is to choose the correct door that comes with a door sensor. Make sure that you clean the house interior surface of your door until it is free of dirt or gunk. Besides that, you must ensure that the wall that you planned to attach the system main unit of your door sensor kit.
  4. Then, you need to use the stud finder in order to locate a stud close enough as possible to the top of the door frame or use the drywall anchors in making a secure attachment to the wall.
  5. After that, you have to hold the door sensor’s main unit up to the wall before leveling it. Once done, you need to mark the area where the top of the unit is on your wall by using the carpenter’s pencil and also to mark the location of the main unit’s screw holes.
  6. Then, you must drill pilot holes in order to secure the screws. For those of you who do not drill into the stud, you must make holes for your drywall anchors before you start to insert the anchors into the wall. Make sure that the unit is secured onto the wall.
  7. For installing the system magnetic switches, you must install the switches on the door and also on the door jamb. The reason for using switches is to enable the switches to come in contact with each other whenever the door is being closed as well as breaking its contact when the door is opened.
  8. Next, you need to mark the location of your magnetic switches before starting to drill pilot holes.

Image Credit:

Flickr CC

Additional Reading:

Domestic Security Systems: Build or Improve Your Own Intruder Alarm System

Home Security That’s Easy-To-Install And Easy-To-Use: Practical Tips For Cheap Home Security Monitoring, Home Burglar Alarms And Do It Yourself Home … From Break-Ins And Any Undesirable Attacks