If you are consistently seeing a warning that one of your Entry Sensors is open, despite all of your doors and windows being closed, one of the following items is likely the cause:

• Your Entry Sensor is too far away from its corresponding magnet piece

• Your Entry Sensor and/or its corresponding magnet are placed on a metallic surface

• The Base Station is too far away from the Entry Sensor

Look at the distance between the sensor and magnet

First, confirm that the door or window where this Entry Sensor is located is closed. If it is closed, make sure that your Entry Sensor and its corresponding magnet are no more than 1.5 inches apart. If they are any farther apart the sensor will be considered open, as seen in the image below.

Look at the material the Entry Sensor is mounted on

You should also make sure that this Entry Sensor is not placed on a metal or steel surface, as that can cause the system to incorrectly register an Entry Sensor as open. If the door or window where this issue is occurring is metal, place a buffer between both parts of the Entry Sensor and the surface. This can be anything like a second layer of adhesive, thin cardboard, or velcro.

Troubleshoot the distance between the Base Station and Entry Sensor

If the Base Station and Entry Sensor are too far away from one another, the system can incorrectly read the sensor as open. Plug the Base Station as close to the Entry Sensor as you can and then open and close the sensor a few times. 

• If the system correctly registers the sensor’s status, that indicates that the Base Station and Entry Sensor are too far away from one another. Consider moving the Base Station to a location that is closer to the sensor

• If the system does not register the sensor’s status correctly, that could indicate an issue with the Base Station’s placement. Refer to the Where Should I Place My Base Station article to learn more about the best place to put the Base Station.