How to Install Window Sensors for a Home Security Alarm System

Gather the tools you will need to install the window sensors for a home security alarm system. Although the exact tools will depend on the specific model you will probably need a drill and a screw driver.

Mark the locations for the contact switches, and drill pilot holes for the screws. Attach the contact switches to the casement and window frame so that they will break contact if the window is opened.

Mark the locations for the window sensor unit. Place the sensor unit as close to top of window as possible. Mark the location of the screw holes and drill pilot holes for the window sensor unit.

Attach the window sensor unit to the wall. You may need to use dry-wall anchors to get a solid attachment.

Calibrate the window sensor with your home security alarm system for the best performance.