1) After the APP connects to the device, click the [Settings] icon in the device list and turn on [Alarm on]. Select the [Virtual fence] to enter the [Virtual fence] settings, turn on [Virtual fence] 2) Fence area settings: enter [Virtual fence area] option, click the screen to generate points that can form a polygon, you can set 3-6 points to adjust the polygon area by adding, dragging and deleting points 3) Time setting: select [Detecting mode] to enter setting interface Always: device always detects the crying and alarms Time interval: you can set 3 time periods in most, device only detects the crying and alarms in the setting time period 4) Detect direction: according to scene need, you can set the rule of the triggering the virtual fence area detection Two-way: going in or out the area trigger the alert Go out: alert when someone go out the area Go in: alert when someone go in the area 5) Detection sensitivity High: alert immediately when the baby is detected close to the border Medium: alert when virtual fence detection is triggered a few time Low: alert when virtual fence detection is triggered multiple time Note: Only xiaovv C1 baby monitor 2K device supports Virtual fence settings function