Door-sense

The included door sensor enables the lock to know whether the door is open/closed for smarter auto-locking and open/ajar alerts; it is optional but widely recommended, though some dislike its look and note it may not surface in every smart-home app.

DoorSense door-status detection adds useful reassurance for remote locking and alerts for a door left ajar. Surface mounting is quick, but some reviewers note flush mounting can be tricky and may require drilling or creative fitting, which may be less renter-friendly.

DoorSense adds meaningful context (open, closed, ajar) and can prevent the bolt from extending when the door is open, but it may require drilling for a clean install and some users report calibration hassles or occasional misbehavior.

Door-sense relies on a gyroscope/accelerometer to infer open/closed/ajar status and trigger alerts or auto-lock. Accuracy is generally good after calibration, but a few reviewers report occasional false readings or less-than-perfect precision.

The included wired door-sense/contact sensor is accurate but often criticized for looking inelegant and adding extra wiring; some users wish it were built-in or removable.