This guide is for owners of the eufy Video Doorbell S4 whose doorbell misses motion, or sends too many alerts. The steps come from eufy’s guide to cameras and doorbells that stop recording and eufy’s guide to false alarms on its wired doorbells, which cover eufy’s cameras and wired doorbells in general, and from eufy’s S4 user guide.

What This Problem Means

The doorbell’s motion detection is off, set too low, or watching the wrong area. The S4 detects motion with radar plus dual PIR, according to eufy’s Irish S4 page, and eufy UK says its radar filtering ignores insects and rain.

Common Symptoms

• People reach the door without an alert
• No motion clips are saved
• Too many alerts from a road, path or trees

Safe Checks You Can Try

1. Turn on motion detection

eufy says to make sure motion detection is turned on in the doorbell’s settings in the app.

2. Raise the sensitivity

If the doorbell still misses motion, raise the motion sensitivity in the doorbell’s motion detection settings.

3. Check the height and angle

eufy’s S4 user guide recommends mounting the doorbell at about 1.4 m, and using the supplied 15° wedge to angle the camera’s view for the best detection range. Fitting the wedge means taking the doorbell and bracket off the wall and feeding the wires through again, so turn off the power at the circuit breaker first, and use a qualified electrician if you’re not sure.

4. Too many alerts: set an ignored zone

eufy’s false alarm guide says to set up an ignored zone under the activity zone settings, so the doorbell ignores areas such as a road. Don’t make the ignored zone too big, because eufy says it may then miss detections.

5. Too many alerts: lower the sensitivity

Turn the sensitivity down a step at a time. eufy says tuning motion detection is a trial-and-error process, because every doorbell’s view is different.

When To Contact Support

If none of these steps fix it, contact eufy through eufy’s support site.