This article is about the Original SimpliSafe system. If you purchased a new system in 2018 or later, you likely have the All-New SimpliSafe. Click here to view this article for the All-New SimpliSafe system. If you're not certain which system you have, you can tell the difference here.
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.