Entry Sensor

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

Troubleshooting

First, double-check that the serial number printed on the sensor matches with the number reported in the warning. If the warning only shows a name, you can access that individual sensor’s settings through the SimpliSafe® Mobile App to find the sensor number by taking the following steps:

1. Open up the SimpliSafe® Mobile App on your smartphone or tablet

2. Select My System from the navigation bar at the bottom of the screen

3. Select Device Settings

4. Tap through the Entry Sensors on your system - their serial numbers will be displayed at the top of the screen

Next, 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, as seen in the image below, the sensor will be considered open.

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.

Installing SimpliSafe® sensors takes less than a minute! In most cases, sensors can be mounted on walls by using the adhesive strips on the back of each device. However, there are some situations where the sensor may not adhere to the wall effectively, like:

• Brick surfaces: the surface can be rough in texture and hard to clean thoroughly

• Hot and humid conditions: humidity can weaken the adhesive strips

• Cold conditions: a cold wall can cause the adhesive to fail

• Dirty surfaces: the adhesives stick best on clean surfaces

For the best results, we suggest making sure that the area you’re adhering the sensor to has been thoroughly cleaned and dried. We recommend wiping the area down with an alcohol-based cleaning product to make sure it’s clear of any dust or dirt.

Once the area is thoroughly dry, simply peel the paper backing off the adhesives and press the sensor firmly to the wall for 30 seconds.

If you have a sensor that has fallen off a wall, be sure to test the sensor to confirm that it is still working properly and was not damaged.

Alternatively, SimpliSafe® sensors can also be screw-mounted using the included mounting bracket. See our How do I Install my Sensors by Screw-Mounting article for more information.

The Entry Sensor magnet uses a slightly different adhesive than the other sensors. Remove the magnet by rotating the magnet slowly until the adhesive loosens and you can pull it off the wall.