Wireless Doorbell Smart Door Bells Home Security Bell Camera with Battery, Real-Time Video and Two-Way Night Vision PIR Motion Detection（720P）;

Q:How does the device store video?
A:The Video Doorbell maximum supports 32G external memory card, which will automatically cover the earliest video when it is full

Q:How to check the offline of the device?
A:Check whether the device electricity is exhausted
Reconfigure the device
Check if the home network broadband is normal

Q:Why do people linger ,but the doorbell did not push the alarm?
A:The doorbell won't detect the lingering and push alarms when the owner remotely login the doorbell