- Ensure that the two pieces are aligned properly. Arrows on both the transmitter and magnet should be directly across from each other
- Both pieces should be as close together as possible, no further than 3/4" apart
- Ensure there is no recess on the door/frame. Both magnet and transmitter should be flush with each other, on the same plane
If the sensor is mounted correctly and is still reporting open when the door is closed, please contact Customer Support for additional troubleshooting.